diff --git a/src/ls.c b/src/ls.c
index 6fb10edf5..ef504202b 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -1900,7 +1900,7 @@ gobble_file (const char *name, enum filetype type, int explicit_arg,
 
 #if USE_ACL
       if (! S_ISLNK (files[files_index].stat.st_mode))
-	files[files_index].have_acl = 4 < acl (path, GETACLCNT, 0, NULL);
+	files[files_index].have_acl = (4 < acl (path, GETACLCNT, 0, NULL));
 #endif
 
       if (S_ISLNK (files[files_index].stat.st_mode)