diff --git a/libfuse-lite/mount.c b/libfuse-lite/mount.c
index 70454f4e..263c20a6 100644
--- a/libfuse-lite/mount.c
+++ b/libfuse-lite/mount.c
@@ -350,7 +350,7 @@ static int receive_fd(int fd)
     }
 
     cmsg = CMSG_FIRSTHDR(&msg);
-    if (!cmsg->cmsg_type == SCM_RIGHTS) {
+    if (cmsg->cmsg_type != SCM_RIGHTS) {
         fprintf(stderr, "got control message of unknown type %d\n",
                 cmsg->cmsg_type);
         return -1;