diff --git a/lib/zstd/mem.h b/lib/zstd/mem.h
index 3a0f34c8706c..93d7a2c377fe 100644
--- a/lib/zstd/mem.h
+++ b/lib/zstd/mem.h
@@ -27,7 +27,7 @@
 /*-****************************************
 *  Compiler specifics
 ******************************************/
-#define ZSTD_STATIC static __inline __attribute__((unused))
+#define ZSTD_STATIC static inline
 
 /*-**************************************************************
 *  Basic Types