diff --git a/src/core/providers/gdal/qgsgdalprovider.cpp b/src/core/providers/gdal/qgsgdalprovider.cpp
index 28822fc0de4..918273ef6ce 100644
--- a/src/core/providers/gdal/qgsgdalprovider.cpp
+++ b/src/core/providers/gdal/qgsgdalprovider.cpp
@@ -272,7 +272,7 @@ QString QgsGdalProvider::dataSourceUri( bool expandAuthConfig ) const
   {
     QString uri( QgsDataProvider::dataSourceUri() );
     // Check for authcfg
-    QRegularExpression authcfgRe( " authcfg='([^']+)'" );
+    QRegularExpression authcfgRe( R"raw(authcfg='?([^'\s]+)'?)raw" );
     QRegularExpressionMatch match;
     if ( uri.contains( authcfgRe, &match ) )
     {