diff --git a/test/core/support/avl_test.c b/test/core/support/avl_test.c
index 981888c1ec29a564bdeb1767bd30a4f10d9a0190..6530fe4269ec5372cfcf85026a77a6b0419d3cf4 100644
--- a/test/core/support/avl_test.c
+++ b/test/core/support/avl_test.c
@@ -3647,6 +3647,8 @@ static void test_stress(void) {
       }
     }
   }
+
+  gpr_avl_unref(avl);
 }
 
 int main(int argc, char *argv[]) {