diff --git a/public/tier1/KeyValues.h b/public/tier1/KeyValues.h
index dbdf5544..9b263310 100644
--- a/public/tier1/KeyValues.h
+++ b/public/tier1/KeyValues.h
@@ -244,7 +244,7 @@ public:
 	// File access. Set UsesEscapeSequences true, if resource file/buffer uses Escape Sequences (eg \n, \t)
 	void UsesEscapeSequences( bool state ); // default false
 	bool LoadFromFile( IFileSystem *filesystem, const char *resourceName, const char *pathID = NULL, GetSymbolProc_t pfnEvaluateSymbolProc = NULL, void *pUnk1 = NULL, const char *pUnk2 = NULL );
-	bool SaveToFile( IFileSystem *filesystem, const char *resourceName, const char *pathID = NULL, bool bAllowEmptyString = false );
+	bool SaveToFile( IFileSystem *filesystem, const char *resourceName, const char *pathID = NULL, bool bAllowEmptyString = false, bool binaryWrite = true );
 	// Read from a buffer...  Note that the buffer must be null terminated
 	bool LoadFromBuffer( char const *resourceName, const char *pBuffer, IFileSystem *pFileSystem = NULL, const char *pPathID = NULL, GetSymbolProc_t pfnEvaluateSymbolProc = NULL, IKeyValuesErrorSpew *pErrorSpew = NULL, void *pUnk1 = NULL, const char *pUnk2 = NULL );