diff --git a/src/main/functors_main.cc b/src/main/functors_main.cc
index 40bb758..1ebec72 100644
--- a/src/main/functors_main.cc
+++ b/src/main/functors_main.cc
@@ -36,6 +36,7 @@ int main() {
   int64_t total = 0;
   for (auto pf : functors) {
     total += pf->_sum;
+    delete pf;
   }
   std::cout << "total: " << total << std::endl;