diff --git a/util/cache_test.cc b/util/cache_test.cc
index 6636bf77e..6fba6a710 100644
--- a/util/cache_test.cc
+++ b/util/cache_test.cc
@@ -383,6 +383,11 @@ TEST_F(CacheTest, SetCapacity) {
   cache->SetCapacity(7);
   ASSERT_EQ(7, cache->GetCapacity());
   ASSERT_EQ(7, cache->GetUsage());
+
+  // release remaining 5 to keep valgrind happy
+  for (size_t i = 5; i < 10; i++) {
+    cache->Release(handles[i]);
+  }
 }
 
 TEST_F(CacheTest, OverCapacity) {