diff --git a/osx.c b/osx.c
index 264ad3a..25ff3c8 100644
--- a/osx.c
+++ b/osx.c
@@ -191,8 +191,7 @@ fail:
 
 static inline int fadvise(int fd, int advice)
 {
-    (void) fd;
-    (void) advice;
+    (void) fd, (void) advice;
 
     errno = ENOTSUP;
     return -1;