diff --git a/openpgp/read_test.go b/openpgp/read_test.go
index 1fbfbac..f5bba30 100644
--- a/openpgp/read_test.go
+++ b/openpgp/read_test.go
@@ -124,7 +124,7 @@ func checkSignedMessage(t *testing.T, signedHex, expected string) {
 		return
 	}
 
-	if !md.IsSigned || md.SignedByKeyId != 0xa34d7e18c20c31bb || md.SignedBy == nil || md.IsEncrypted || md.IsSymmetricallyEncrypted || len(md.EncryptedToKeyIds) != 0 || md.IsSymmetricallyEncrypted {
+	if !md.IsSigned || md.SignedByKeyId != 0xa34d7e18c20c31bb || md.SignedBy == nil || md.IsEncrypted || md.IsSymmetricallyEncrypted || len(md.EncryptedToKeyIds) != 0 || md.DecryptedWith != (Key{}) {
 		t.Errorf("bad MessageDetails: %#v", md)
 	}