diff --git a/include/share/compat.h b/include/share/compat.h
index a7447aa5..a17cc634 100644
--- a/include/share/compat.h
+++ b/include/share/compat.h
@@ -85,12 +85,7 @@
 #define flac_restrict
 #endif
 
-/* adjust for compilers that can't understand using LLU suffix for uint64_t literals */
-#ifdef _MSC_VER
-#define FLAC__U64L(x) x
-#else
-#define FLAC__U64L(x) x##LLU
-#endif
+#define FLAC__U64L(x) x##ULL
 
 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
 #define FLAC__STRNCASECMP strnicmp