diff --git a/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp b/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp
index 81c561f27..345db807b 100644
--- a/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp
+++ b/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp
@@ -172,6 +172,7 @@ bool processMCMeta(DataPack* pack, QByteArray&& raw_data)
     auto json_doc = Json::parseUntilMalformed(raw_data, &parse_error);
     if (parse_error.error != QJsonParseError::NoError) {
         qWarning() << "Failed to parse JSON:" << parse_error.errorString();
+        return false;
     }
 
     try {
diff --git a/launcher/ui/pages/instance/McClient.cpp b/launcher/ui/pages/instance/McClient.cpp
index e42342a11..f91194dfe 100644
--- a/launcher/ui/pages/instance/McClient.cpp
+++ b/launcher/ui/pages/instance/McClient.cpp
@@ -81,16 +81,11 @@ void McClient::parseResponse()
 
     // 'resp' should now be the JSON string
     QJsonParseError parseError;
-    QJsonDocument doc = QJsonDocument::fromJson(m_resp, &parseError);
+    QJsonDocument doc = Json::parseUntilMalformed(m_resp, &parseError);
     if (parseError.error != QJsonParseError::NoError) {
-        QByteArray validJson = m_resp.left(parseError.offset);
-        doc = QJsonDocument::fromJson(validJson, &parseError);
-
-        if (parseError.error != QJsonParseError::NoError) {
-            qDebug() << "Failed to parse JSON:" << parseError.errorString();
-            emitFail(parseError.errorString());
-            return;
-        }
+        qDebug() << "Failed to parse JSON:" << parseError.errorString();
+        emitFail(parseError.errorString());
+        return;
     }
     emitSucceed(doc.object());
 }