diff --git a/libhidlcache/HidlCache.h b/libhidlcache/HidlCache.h
index db778d3..39a7b3a 100644
--- a/libhidlcache/HidlCache.h
+++ b/libhidlcache/HidlCache.h
@@ -97,7 +97,7 @@
 template <class Key, class Value, class Compare>
 sp<Value> HidlCache<Key, Value, Compare>::unlock(const Key& key) {
     Lock lock(mMutex);
-    if (locked(key) > 0) {
+    if (locked(key)) {
         sp<Value> v = mLocked[key];
         mLocked.erase(key);
         return v;