diff --git a/uisimulator/common/io.c b/uisimulator/common/io.c
index f735c23a70..ee2ad6f14c 100644
--- a/uisimulator/common/io.c
+++ b/uisimulator/common/io.c
@@ -68,7 +68,7 @@ struct mydir {
 
 typedef struct mydir MYDIR;
 
-#ifndef WIN32
+#if 1 /* maybe this needs disabling for MSVC... */
 static unsigned int rockbox2sim(int opt)
 {
     int newopt = 0;
@@ -149,16 +149,14 @@ void sim_closedir(MYDIR *dir)
 int sim_open(const char *name, int o)
 {
     char buffer[256]; /* sufficiently big */
-#ifndef WIN32
     int opts = rockbox2sim(o);
-#endif
 
     if(name[0] == '/') {
         sprintf(buffer, "%s%s", SIMULATOR_ARCHOS_ROOT, name);
         
         debugf("We open the real file '%s'\n", buffer);
 #ifdef WIN32
-        return (open)(buffer, o);
+        return (open)(buffer, opts);
 #else
         return (open)(buffer, opts, 0666);
 #endif