diff --git a/src/FactSystem/FactMetaData.cc b/src/FactSystem/FactMetaData.cc
index 238708479bc8b3efb997454ebf2c143f6e66a4e0..4a9c5aa407909d0d273d288d603a127ebeaac9c4 100644
--- a/src/FactSystem/FactMetaData.cc
+++ b/src/FactSystem/FactMetaData.cc
@@ -1207,7 +1207,7 @@ QMap<QString, FactMetaData*> FactMetaData::createMapFromJsonFile(const QString&
     QJsonParseError jsonParseError;
     QJsonDocument doc = QJsonDocument::fromJson(bytes, &jsonParseError);
     if (jsonParseError.error != QJsonParseError::NoError) {
-        qWarning() <<  "Unable to parse json document" << jsonFilename << jsonParseError.errorString();
+        qWarning() <<  "Unable to parse json document filename:error:offset" << jsonFilename << jsonParseError.errorString() << jsonParseError.offset;
         return metaDataMap;
     }