1 files changed, 2 insertions, 2 deletions
diff --git a/platform/qt/include/qmapboxgl.hpp b/platform/qt/include/qmapboxgl.hpp
index 00c5735a93..478c15a51e 100644
--- a/platform/qt/include/qmapboxgl.hpp
+++ b/platform/qt/include/qmapboxgl.hpp
@@ -219,8 +219,8 @@ public:
         QMapbox::CustomLayerRenderFunction,
         QMapbox::CustomLayerDeinitializeFunction,
         void* context,
-        char* before = NULL);
-    void addLayer(const QVariantMap &params);
+        const QString& before = QString());
+    void addLayer(const QVariantMap &params, const QString& before = QString());
     bool layerExists(const QString &id);
     void removeLayer(const QString &id);