diff --git a/consensus/ethash/ethash_test.go b/consensus/ethash/ethash_test.go
index e5a45fc6e2..31116da437 100644
--- a/consensus/ethash/ethash_test.go
+++ b/consensus/ethash/ethash_test.go
@@ -44,6 +44,7 @@ func TestTestMode(t *testing.T) {
 }
 
 // This test checks that cache lru logic doesn't crash under load.
+// It reproduces https://github.com/ethereum/go-ethereum/issues/14943
 func TestCacheFileEvict(t *testing.T) {
 	tmpdir, err := ioutil.TempDir("", "ethash-test")
 	if err != nil {