diff --git a/test/stack_test.c b/test/stack_test.c
index 1d7be299aa..287b099416 100644
--- a/test/stack_test.c
+++ b/test/stack_test.c
@@ -321,6 +321,7 @@ static int test_uchar_stack(int reserve)
 end:
     sk_uchar_free(r);
     sk_uchar_free(s);
+    sk_uchar_free(q);
     return testresult;
 }