diff --git a/cache_test.go b/cache_test.go
index 4c2e0c6..4e5d1f8 100644
--- a/cache_test.go
+++ b/cache_test.go
@@ -509,7 +509,7 @@ func TestLargeEntry(t *testing.T) {
 	if err != ErrLargeEntry {
 		t.Error("err should be ErrLargeEntry", err)
 	}
-	val = make([]byte, maxValLen-2)
+	val = make([]byte, 0, maxValLen-2)
 	err = cache.Set(key, val, 0)
 	if err != nil {
 		t.Error(err)