diff --git a/src/librssguard/miscellaneous/application.cpp b/src/librssguard/miscellaneous/application.cpp
index f8d877560..c5c8b439a 100755
--- a/src/librssguard/miscellaneous/application.cpp
+++ b/src/librssguard/miscellaneous/application.cpp
@@ -470,7 +470,7 @@ void Application::showGuiMessage(Notification::Event event, const QString& title
     MessageBox::show(parent == nullptr ? mainFormWidget() : parent, QMessageBox::Icon(message_type), title, message);
   }
   else {
-    qDebugNN << LOGSEC_CORE << "Silencing GUI message: '" << message << "'.";
+    qDebugNN << LOGSEC_CORE << "Silencing GUI message:" << QUOTE_W_SPACE_DOT(message);
   }
 }
 
diff --git a/src/librssguard/network-web/oauth2service.cpp b/src/librssguard/network-web/oauth2service.cpp
index 629487687..8f6ae9125 100644
--- a/src/librssguard/network-web/oauth2service.cpp
+++ b/src/librssguard/network-web/oauth2service.cpp
@@ -203,7 +203,7 @@ void OAuth2Service::tokenRequestFinished(QNetworkReply* network_reply) {
   QJsonDocument json_document = QJsonDocument::fromJson(repl);
   QJsonObject root_obj = json_document.object();
 
-  qDebugNN << LOGSEC_OAUTH << "Token response:" << QUOTE_W_SPACE_DOT(json_document.toJson());
+  qDebugNN << LOGSEC_OAUTH << "Token response:" << QUOTE_W_SPACE_DOT(QString::fromUtf8(json_document.toJson()));
 
   if (network_reply->error() != QNetworkReply::NetworkError::NoError) {
     qWarningNN << LOGSEC_OAUTH
@@ -216,6 +216,11 @@ void OAuth2Service::tokenRequestFinished(QNetworkReply* network_reply) {
     QString error = root_obj.value("error").toString();
     QString error_description = root_obj.value("error_description").toString();
 
+    qWarningNN << LOGSEC_OAUTH
+               << "JSON error when obtaining token response:"
+               << QUOTE_W_SPACE(error)
+               << QUOTE_W_SPACE_DOT(error_description);
+
     logout();
 
     emit tokensRetrieveError(error, error_description);