diff --git a/SConstruct b/SConstruct
index 6fceb57..08be1ad 100644
--- a/SConstruct
+++ b/SConstruct
@@ -45,10 +45,6 @@ env = Environment(
   CPPDEFINES = [
     "HAVE_CONFIG_H",
 
-    # boost made a large non-backwards compatible change to their filesystem
-    # library. Specify version 2 explicitly.
-    ["BOOST_FILESYSTEM_VERSION", 2],
-
     # We use gettext for translations.
     "ENABLE_NLS",
 
diff --git a/src/MachineBase/RLVMInstance.cpp b/src/MachineBase/RLVMInstance.cpp
index 2cba1aa..4dc4215 100644
--- a/src/MachineBase/RLVMInstance.cpp
+++ b/src/MachineBase/RLVMInstance.cpp
@@ -71,9 +71,6 @@ RLVMInstance::RLVMInstance()
       count_undefined_copcodes_(false),
       load_save_(-1) {
   srand(time(NULL));
-
-  // Set global state: allow spaces in game paths
-  fs::path::default_name_check(fs::native);
 }
 
 RLVMInstance::~RLVMInstance() {}
@@ -88,7 +85,7 @@ void RLVMInstance::Run(const boost::filesystem::path& gamerootPath) {
     CheckBadEngine(gamerootPath, siglus_exes, _("Can't run Siglus games"));
 
     Gameexe gameexe(gameexePath);
-    gameexe("__GAMEPATH") = gamerootPath.file_string();
+    gameexe("__GAMEPATH") = gamerootPath.string();
 
     // Possibly force starting at a different seen
     if (seen_start_ != -1)
@@ -109,7 +106,7 @@ void RLVMInstance::Run(const boost::filesystem::path& gamerootPath) {
     }
 
     SDLSystem sdlSystem(gameexe);
-    libReallive::Archive arc(seenPath.file_string(), gameexe("REGNAME"));
+    libReallive::Archive arc(seenPath.string(), gameexe("REGNAME"));
     RLMachine rlmachine(sdlSystem, arc);
     addAllModules(rlmachine);
     addGameHacks(rlmachine);
diff --git a/src/MachineBase/SerializationGlobal.cpp b/src/MachineBase/SerializationGlobal.cpp
index c06d7d3..17230b4 100644
--- a/src/MachineBase/SerializationGlobal.cpp
+++ b/src/MachineBase/SerializationGlobal.cpp
@@ -36,6 +36,7 @@
 #include <boost/serialization/map.hpp>
 #include <boost/filesystem/path.hpp>
 #include <boost/filesystem/fstream.hpp>
+#include <boost/filesystem/operations.hpp>
 #include <boost/iostreams/filtering_stream.hpp>
 #include <boost/iostreams/filter/zlib.hpp>
 #include <fstream>
@@ -117,8 +118,8 @@ void loadGlobalMemory(RLMachine& machine) {
       // data is corrupted. Either way, we can't safely do ANYTHING with this
       // game's entire save data so move it out of the way.
       fs::path save_dir = machine.system().gameSaveDirectory();
-      fs::path dest_save_dir = save_dir.branch_path() /
-                               (save_dir.leaf() + ".old_corrupted_data");
+      fs::path dest_save_dir = save_dir.parent_path() /
+                               (save_dir.filename() / ".old_corrupted_data");
 
       if (fs::exists(dest_save_dir))
         fs::remove_all(dest_save_dir);
diff --git a/src/Modules/Module_Sys_Save.cpp b/src/Modules/Module_Sys_Save.cpp
index 02284ea..09cf443 100644
--- a/src/Modules/Module_Sys_Save.cpp
+++ b/src/Modules/Module_Sys_Save.cpp
@@ -255,7 +255,7 @@ struct LatestSave : public RLOp_Store_Void {
     if (fs::exists(saveDir)) {
       fs::directory_iterator end;
       for (fs::directory_iterator it(saveDir); it != end; ++it) {
-        string filename = it->leaf();
+        string filename = it->path().filename().string();
         if (starts_with(filename, "save") && ends_with(filename, ".sav.gz")) {
           time_t mtime = fs::last_write_time(*it);
 
diff --git a/src/Systems/Base/GraphicsSystem.cpp b/src/Systems/Base/GraphicsSystem.cpp
index 592216a..a983649 100644
--- a/src/Systems/Base/GraphicsSystem.cpp
+++ b/src/Systems/Base/GraphicsSystem.cpp
@@ -766,7 +766,7 @@ GraphicsObjectData* GraphicsSystem::buildObjOfFile(
     throw rlvm::Exception(oss.str());
   }
 
-  string file_str = full_path.file_string();
+  string file_str = full_path.string();
   if (iends_with(file_str, "g00") || iends_with(file_str, "pdt")) {
     return new GraphicsObjectOfFile(system(), filename);
   } else if (iends_with(file_str, "anm")) {
diff --git a/src/Systems/Base/KOEPACVoiceArchive.cpp b/src/Systems/Base/KOEPACVoiceArchive.cpp
index 5a53389..ec712a1 100644
--- a/src/Systems/Base/KOEPACVoiceArchive.cpp
+++ b/src/Systems/Base/KOEPACVoiceArchive.cpp
@@ -167,7 +167,7 @@ int8_t koe_ad_trans_tbl[256] = {
 class KOEPACVoiceSample : public VoiceSample {
  public:
   KOEPACVoiceSample(fs::path file, int offset, int length, int rate)
-      : stream_(std::fopen(file.external_file_string().c_str(), "rb")),
+      : stream_(std::fopen(file.native().c_str(), "rb")),
         offset_(offset), length_(length), rate_(rate) {
   }
 
diff --git a/src/Systems/Base/NWKVoiceArchive.cpp b/src/Systems/Base/NWKVoiceArchive.cpp
index e5abccf..f215b18 100644
--- a/src/Systems/Base/NWKVoiceArchive.cpp
+++ b/src/Systems/Base/NWKVoiceArchive.cpp
@@ -55,7 +55,7 @@ class NWKVoiceSample : public VoiceSample {
 NWKVoiceSample::NWKVoiceSample(boost::filesystem::path file,
                                int offset,
                                int length)
-    : stream_(std::fopen(file.external_file_string().c_str(), "rb")),
+    : stream_(std::fopen(file.native().c_str(), "rb")),
       offset_(offset), length_(length) {
 }
 
diff --git a/src/Systems/Base/OVKVoiceSample.cpp b/src/Systems/Base/OVKVoiceSample.cpp
index 0318356..efef262 100644
--- a/src/Systems/Base/OVKVoiceSample.cpp
+++ b/src/Systems/Base/OVKVoiceSample.cpp
@@ -113,7 +113,7 @@ std::string oggErrorCodeToString(int code) {
 }  // namespace
 
 OVKVoiceSample::OVKVoiceSample(fs::path file)
-    : stream_(std::fopen(file.external_file_string().c_str(), "rb")),
+    : stream_(std::fopen(file.native().c_str(), "rb")),
       offset_(0), length_(0) {
   std::fseek(stream_, 0, SEEK_END);
   length_ = ftell(stream_);
@@ -121,7 +121,7 @@ OVKVoiceSample::OVKVoiceSample(fs::path file)
 }
 
 OVKVoiceSample::OVKVoiceSample(fs::path file, int offset, int length)
-    : stream_(std::fopen(file.external_file_string().c_str(), "rb")),
+    : stream_(std::fopen(file.native().c_str(), "rb")),
       offset_(offset), length_(length) {
 }
 
diff --git a/src/Systems/Base/System.cpp b/src/Systems/Base/System.cpp
index aa5990d..636a007 100644
--- a/src/Systems/Base/System.cpp
+++ b/src/Systems/Base/System.cpp
@@ -466,7 +466,7 @@ void System::buildFileSystemCache() {
   fs::directory_iterator dir_end;
   for (fs::directory_iterator dir(gamepath); dir != dir_end; ++dir) {
     if (fs::is_directory(dir->status())) {
-      std::string lowername = dir->path().filename();
+      std::string lowername = dir->path().filename().string();
       to_lower(lowername);
       if (find(valid_directories.begin(), valid_directories.end(), lowername) !=
           valid_directories.end()) {
@@ -482,14 +482,14 @@ void System::addDirectoryToCache(const fs::path& directory) {
     if (fs::is_directory(dir->status())) {
       addDirectoryToCache(dir->path());
     } else {
-      std::string extension = dir->path().extension();
+      std::string extension = dir->path().extension().string();
       if (extension.size() > 1 && extension[0] == '.')
         extension = extension.substr(1);
       to_lower(extension);
 
       if (find(ALL_FILETYPES.begin(), ALL_FILETYPES.end(), extension) !=
           ALL_FILETYPES.end()) {
-        std::string stem = dir->path().stem();
+        std::string stem = dir->path().stem().string();
         to_lower(stem);
 
         filesystem_cache_.insert(
diff --git a/src/Systems/Base/VoiceCache.cpp b/src/Systems/Base/VoiceCache.cpp
index ad30131..d1b6371 100644
--- a/src/Systems/Base/VoiceCache.cpp
+++ b/src/Systems/Base/VoiceCache.cpp
@@ -93,7 +93,7 @@ shared_ptr<VoiceArchive> VoiceCache::findArchive(int file_no) const {
     return shared_ptr<VoiceArchive>();
   }
 
-  string file_str = file.file_string();
+  string file_str = file.string();
   if (iends_with(file_str, "ovk")) {
     return shared_ptr<VoiceArchive>(new OVKVoiceArchive(file, file_no));
   } else if (iends_with(file_str, "nwk")) {
@@ -116,7 +116,7 @@ shared_ptr<VoiceSample> VoiceCache::findUnpackedSample(
 
   fs::path file =
       sound_system_.system().findFile(oss.str(), KOE_LOOSE_FILETYPES);
-  string file_str = file.file_string();
+  string file_str = file.string();
 
   if (iends_with(file_str, "ogg")) {
     return shared_ptr<VoiceSample>(new OVKVoiceSample(file));
diff --git a/src/Systems/SDL/SDLGraphicsSystem.cpp b/src/Systems/SDL/SDLGraphicsSystem.cpp
index 4b444c8..0c07e2c 100644
--- a/src/Systems/SDL/SDLGraphicsSystem.cpp
+++ b/src/Systems/SDL/SDLGraphicsSystem.cpp
@@ -572,7 +572,7 @@ boost::shared_ptr<const Surface> SDLGraphicsSystem::loadNonCGSurfaceFromFile(
   }
 
   // Glue code to allow my stuff to work with Jagarl's loader
-  FILE* file = fopen(filename.file_string().c_str(), "rb");
+  FILE* file = fopen(filename.string().c_str(), "rb");
   if (!file) {
     ostringstream oss;
     oss << "Could not open file: " << filename;
diff --git a/src/Systems/SDL/SDLMusic.cpp b/src/Systems/SDL/SDLMusic.cpp
index ebcb611..7d32a96 100644
--- a/src/Systems/SDL/SDLMusic.cpp
+++ b/src/Systems/SDL/SDLMusic.cpp
@@ -205,7 +205,7 @@ boost::shared_ptr<SDLMusic> SDLMusic::CreateMusic(
     throw rlvm::Exception(oss.str());
   }
 
-  const string& raw_path = file_path.external_file_string();
+  const string& raw_path = file_path.native();
   for (FileTypes::const_iterator it = types.begin(); it != types.end(); ++it) {
     if (iends_with(raw_path, it->first)) {
       FILE* f = fopen(raw_path.c_str(), "r");
diff --git a/src/Systems/SDL/SDLSoundChunk.cpp b/src/Systems/SDL/SDLSoundChunk.cpp
index 99c5ac7..ee57b51 100644
--- a/src/Systems/SDL/SDLSoundChunk.cpp
+++ b/src/Systems/SDL/SDLSoundChunk.cpp
@@ -51,11 +51,11 @@ SDLSoundChunk::~SDLSoundChunk() {
 }
 
 Mix_Chunk* SDLSoundChunk::loadSample(const boost::filesystem::path& path) {
-  if (boost::iequals(path.extension(), ".nwa")) {
+  if (boost::iequals(path.extension().string(), ".nwa")) {
     // Hack to load NWA sounds into a MixChunk. I was resisted doing this
     // because I assumed there was a better way, but this is essentially what
     // jagarl does in xclannad too :(
-    FILE* f = fopen(path.external_file_string().c_str(), "r");
+    FILE* f = fopen(path.native().c_str(), "r");
     if (!f)
       return NULL;
     int size = 0;
@@ -67,7 +67,7 @@ Mix_Chunk* SDLSoundChunk::loadSample(const boost::filesystem::path& path) {
 
     return chunk;
   } else {
-    return Mix_LoadWAV(path.external_file_string().c_str());
+    return Mix_LoadWAV(path.native().c_str());
   }
 }
 
diff --git a/src/Systems/SDL/SDLTextSystem.cpp b/src/Systems/SDL/SDLTextSystem.cpp
index 07cea54..1c64049 100644
--- a/src/Systems/SDL/SDLTextSystem.cpp
+++ b/src/Systems/SDL/SDLTextSystem.cpp
@@ -139,7 +139,7 @@ int SDLTextSystem::charWidth(int size, uint16_t codepoint) {
 boost::shared_ptr<TTF_Font> SDLTextSystem::getFontOfSize(int size) {
   FontSizeMap::iterator it = map_.find(size);
   if (it == map_.end()) {
-    string filename = findFontFile(system()).external_file_string();
+    string filename = findFontFile(system()).native();
     TTF_Font* f = TTF_OpenFont(filename.c_str(), size);
     if (f == NULL) {
       ostringstream oss;
diff --git a/src/Utilities/File.cpp b/src/Utilities/File.cpp
index 2db0e2e..8d1c5de 100644
--- a/src/Utilities/File.cpp
+++ b/src/Utilities/File.cpp
@@ -72,7 +72,7 @@ fs::path correctPathCase(fs::path Path) {
   // which may have incorrect case.
   stack<string> pathElts;
   while (!Path.empty() && !exists(Path)) {
-    pathElts.push(Path.leaf());
+    pathElts.push(Path.filename().string());
     Path = Path.branch_path();
   }
   // Now proceed forwards through the possibly-incorrect elements.
@@ -96,10 +96,10 @@ fs::path correctPathCase(fs::path Path) {
       directory_iterator end;
       bool found = false;
       for (directory_iterator dir(Path); dir != end; ++dir) {
-        string uleaf = dir->leaf();
+        string uleaf = dir->path().filename().string();
         to_upper(uleaf);
         if (uleaf == elt && (!needDir || is_directory(*dir))) {
-          Path /= dir->leaf();
+          Path /= dir->path().filename();
           found = true;
           break;
         }
diff --git a/src/libReallive/archive.cpp b/src/libReallive/archive.cpp
index fbde57b..f36e222 100644
--- a/src/libReallive/archive.cpp
+++ b/src/libReallive/archive.cpp
@@ -100,7 +100,7 @@ void Archive::readOverrides() {
   fs::path seen_dir = fs::path(name).branch_path();
   fs::directory_iterator end;
   for (fs::directory_iterator it(seen_dir); it != end; ++it) {
-    string filename = it->leaf();
+    string filename = it->path().filename().string();
     if (filename.size() == 12 &&
         istarts_with(filename, "seen") &&
         iends_with(filename, ".txt") &&
diff --git a/vendor/wxInclude.cpp b/vendor/wxInclude.cpp
index 7d4e6c5..0203f55 100644
--- a/vendor/wxInclude.cpp
+++ b/vendor/wxInclude.cpp
@@ -266,7 +266,7 @@ int main(int argc, char* argv[]) {
 							std::cout << "Process: file '" << file << "'..." << std::endl;
 
 							/* Remove extension */
-                            file = inputpath.leaf();
+                            file = inputpath.filename().string();
 							boost::erase_last( file, fileext );
 
 							if ( !opt.count( "respectcase" ) )
@@ -316,7 +316,7 @@ int main(int argc, char* argv[]) {
 									fs::ifstream input( dir_itr->path(), std::ios::in | std::ios::binary | std::ios::ate );
 									input.rdbuf()->pubsetbuf( inbuffer, BUFFER_SIZE ); 
 
-									std::string file( dir_itr->path().leaf() );
+									std::string file( dir_itr->path().filename().string() );
 
 									if ( input.is_open() ) {
 										/* Show status */