diff --git a/src/basic/macro.h b/src/basic/macro.h
index 2c6e46b6c83..78679083e85 100644
--- a/src/basic/macro.h
+++ b/src/basic/macro.h
@@ -48,7 +48,11 @@
 #define _weakref_(x) __attribute__((weakref(#x)))
 #define _alignas_(x) __attribute__((aligned(__alignof(x))))
 #define _cleanup_(x) __attribute__((cleanup(x)))
+#if __GNUC__ >= 7
 #define _fallthrough_ __attribute__((fallthrough))
+#else
+#define _fallthrough_
+#endif
 
 /* Temporarily disable some warnings */
 #define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT                     \