diff --git a/src/thirdparty/SOIL2 b/src/thirdparty/SOIL2
index e9ae69d4a..9b7d218b2 160000
--- a/src/thirdparty/SOIL2
+++ b/src/thirdparty/SOIL2
@@ -1 +1 @@
-Subproject commit e9ae69d4aadaefcca0a7c0ca43bfcee0d4c09b79
+Subproject commit 9b7d218b20a66ec92ee202261f2699222609b45e
diff --git a/src/thirdparty/efsw b/src/thirdparty/efsw
index 22f17a0bc..e937840e6 160000
--- a/src/thirdparty/efsw
+++ b/src/thirdparty/efsw
@@ -1 +1 @@
-Subproject commit 22f17a0bcdf3a4edf61f8b14328391463389e548
+Subproject commit e937840e62f6fab68e5d0a7437f99bb2efc04a05
diff --git a/src/tools/ecode/filesystemlistener.cpp b/src/tools/ecode/filesystemlistener.cpp
index cb84de30d..de5a5339f 100644
--- a/src/tools/ecode/filesystemlistener.cpp
+++ b/src/tools/ecode/filesystemlistener.cpp
@@ -30,7 +30,7 @@ static inline bool endsWithSlash( const std::string& dir ) {
 
 void FileSystemListener::handleFileAction( efsw::WatchID, const std::string& dir,
 										   const std::string& filename, efsw::Action action,
-										   std::string oldFilename ) {
+										   const std::string& oldFilename ) {
 	FileInfo file( ( endsWithSlash( dir ) ? dir : ( dir + FileSystem::getOSSlash() ) ) + filename );
 
 	switch ( action ) {
diff --git a/src/tools/ecode/filesystemlistener.hpp b/src/tools/ecode/filesystemlistener.hpp
index 985cbb5fd..f71be38d4 100644
--- a/src/tools/ecode/filesystemlistener.hpp
+++ b/src/tools/ecode/filesystemlistener.hpp
@@ -28,7 +28,7 @@ class FileSystemListener : public efsw::FileWatchListener {
 	virtual ~FileSystemListener() {}
 
 	void handleFileAction( efsw::WatchID, const std::string& dir, const std::string& filename,
-						   efsw::Action action, std::string oldFilename );
+						   efsw::Action action, const std::string& oldFilename );
 
 	void setFileSystemModel( std::shared_ptr<FileSystemModel> model ) { mFileSystemModel = model; }
 
diff --git a/src/tools/uieditor/uieditor.cpp b/src/tools/uieditor/uieditor.cpp
index 3b545a736..e855cc1bb 100644
--- a/src/tools/uieditor/uieditor.cpp
+++ b/src/tools/uieditor/uieditor.cpp
@@ -84,7 +84,7 @@ class UpdateListener : public efsw::FileWatchListener {
 	virtual ~UpdateListener() {}
 
 	void handleFileAction( efsw::WatchID, const std::string& dir, const std::string& filename,
-						   efsw::Action action, std::string ) {
+						   efsw::Action action, const std::string& ) {
 		if ( action == efsw::Actions::Modified ) {
 			if ( dir + filename == mApp->getCurrentLayout() ) {
 				mApp->updateLayoutFunc( InvalidationType::FileSystem );