diff --git a/src/env.c b/src/env.c
index 38e8602..2f9e5cb 100644
--- a/src/env.c
+++ b/src/env.c
@@ -242,7 +242,8 @@ struct Environment defaultEnv()
     }
 
     for(unsigned i = 0; i < sizeof(codes)/sizeof(codes[0]); i++) {
-        parseEval(codes[i], &e);
+        Object toClean = parseEval(codes[i], &e);
+        cleanObject(&toClean);
     }
 
     return e;