diff --git a/src/common.h b/src/common.h
--- a/src/common.h
+++ b/src/common.h
@@ -31,7 +31,9 @@ typedef unsigned long long ARCH_WORD_64;
 #define is_aligned(PTR, CNT) ((((ARCH_WORD)(const void *)(PTR))&(CNT-1))==0)
 
 #ifdef __GNUC__
-#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7) || defined(__INTEL_COMPILER)
+#if __GNUC__ >= 5
+#define MAYBE_INLINE __attribute__((gnu_inline)) inline
+#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7) || defined(__INTEL_COMPILER)
 #define MAYBE_INLINE __attribute__((always_inline)) inline
 #elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
 #define MAYBE_INLINE __attribute__((always_inline))