diff --git a/day1/homework/h4.cpp b/day1/homework/h4.cpp
index 60c584d..8f79291 100644
--- a/day1/homework/h4.cpp
+++ b/day1/homework/h4.cpp
@@ -36,5 +36,9 @@ int main()
         p = p->next;
     }
 
+    free(fn1);
+    free(fn2);
+    free(fn3);
+    free(head);
     return 0;
 }