--- a/src/sidtune.cpp
+++ b/src/sidtune.cpp
@@ -306,11 +306,7 @@ udword sidTune::loadFile(const char* fileName, ubyte** bufferRef)
         return 0;
     }
     // Open binary input file stream at end of file.
-#if defined(SID_HAVE_IOS_BIN)
-	ifstream myIn( fileName, ios::in|ios::bin|ios::ate );
-#else
 	ifstream myIn( fileName, ios::in|ios::binary|ios::ate );
-#endif
 	// As a replacement for !is_open(), bad() and the NOT-operator
     // don't seem to work on all systems.
 #if defined(SID_DONT_HAVE_IS_OPEN)
@@ -972,11 +968,7 @@ bool sidTune::saveC64dataFile( const char* fileName, bool overWriteFlag )
         }
 		// Open binary output file stream.
         else
-#if defined(SID_HAVE_IOS_BIN)
-            fMyOut.open( fileName, ios::out|ios::bin|ios::trunc );
-#else
             fMyOut.open( fileName, ios::out|ios::binary|ios::trunc );
-#endif
 		if ( !fMyOut )
 		{ 
 			info.statusString = text_cantCreateFile;
@@ -1061,11 +1053,7 @@ bool sidTune::savePSIDfile( const char* fileName, bool overWriteFlag )
         }
 		// Open binary output file stream.
         else
-#if defined(SID_HAVE_IOS_BIN)
-            fMyOut.open( fileName, ios::out|ios::bin|ios::trunc );
-#else
             fMyOut.open( fileName, ios::out|ios::binary|ios::trunc );
-#endif
 		if ( !fMyOut )
 		{
 			info.statusString = text_cantCreateFile;