diff --git a/src/builtins/mod.rs b/src/builtins/mod.rs
index 7ce6520..4e26dc5 100644
--- a/src/builtins/mod.rs
+++ b/src/builtins/mod.rs
@@ -155,3 +155,7 @@ mod tests {
         assert!(!is_builtin("notabuiltin"))
     }
 
+    #[test]
+    fn test_is_builtin_rick(){
+        assert!(is_builtin("rick"));
+    }