diff --git a/src/minivhd_util.c b/src/minivhd_util.c
index edede96..5bfc599 100644
--- a/src/minivhd_util.c
+++ b/src/minivhd_util.c
@@ -255,7 +255,9 @@ int64_t mvhd_ftello64(FILE* stream)
 {
 #ifdef _MSC_VER
     return _ftelli64(stream);
-#else
+#elif defined(__MINGW32__)
+    return ftello64(stream);
+#else /* This should work with linux (with _FILE_OFFSET_BITS), and hopefully OS X and BSD */
     return ftello(stream);
 #endif
 }
@@ -264,7 +266,9 @@ int mvhd_fseeko64(FILE* stream, int64_t offset, int origin)
 {
 #ifdef _MSC_VER
     return _fseeki64(stream, offset, origin);
-#else
+#elif defined(__MINGW32__)
+    return fseeko64(stream, offset, origin);
+#else /* This should work with linux (with _FILE_OFFSET_BITS), and hopefully OS X and BSD */
     return fseeko(stream, offset, origin);
 #endif
 }