--- crnlib/crn_core.h
+++ crnlib/crn_core.h
@@ -82,7 +82,7 @@

    #define CRNLIB_RESTRICT

-   #define CRNLIB_FORCE_INLINE inline __attribute__((__always_inline__,__gnu_inline__))
+   #define CRNLIB_FORCE_INLINE inline __attribute__((always_inline))

    #define CRNLIB_INT64_FORMAT_SPECIFIER "%lli"
    #define CRNLIB_UINT64_FORMAT_SPECIFIER "%llu"
