diff --git a/src/builtins/mod.rs b/src/builtins/mod.rs
index 6aacd58..f39bc04 100644
--- a/src/builtins/mod.rs
+++ b/src/builtins/mod.rs
@@ -145,4 +145,9 @@ mod tests {
     fn test_is_builtin_notabuiltin() {
         assert!(!is_builtin("notabuiltin"))
     }
+
+    #[test]
+    fn test_is_builtin_blahaj(){
+        assert!(is_builtin("blahaj"));
+    }
 }