diff --git a/Quotient/connectionencryptiondata_p.cpp b/Quotient/connectionencryptiondata_p.cpp
index 891fb3b18..c7c43b961 100644
--- a/Quotient/connectionencryptiondata_p.cpp
+++ b/Quotient/connectionencryptiondata_p.cpp
@@ -570,7 +570,7 @@ void ConnectionEncryptionData::handleQueryKeys(const QHash<QString, QHash<QStrin
                 }
             }
             if (!selfSigningKey.isEmpty() && !device.signatures[user]["ed25519:"_ls % selfSigningKey].isEmpty()) {
-                if (ed25519VerifySignature(selfSigningKey, toJson(static_cast<DeviceKeys>(device)), device.signatures[user]["ed25519:"_ls % selfSigningKey])) {
+                if (ed25519VerifySignature(selfSigningKey, toJson(static_cast<const DeviceKeys&>(device)), device.signatures[user]["ed25519:"_ls % selfSigningKey])) {
                     selfVerifiedDevices[user][device.deviceId] = true;
                     emit q->sessionVerified(user, device.deviceId);
                 } else {