diff --git a/Python/optimizer.c b/Python/optimizer.c
index 935485549387483..6e7f599fbe988f7 100644
--- a/Python/optimizer.c
+++ b/Python/optimizer.c
@@ -1773,6 +1773,7 @@ static int
 executor_clear(PyObject *op)
 {
     executor_invalidate(op);
+    return 0;
 }
 
 void