diff --git a/platform/qt/include/qmapbox.hpp b/platform/qt/include/qmapbox.hpp
index 475c591de..3acc9d55e 100644
--- a/platform/qt/include/qmapbox.hpp
+++ b/platform/qt/include/qmapbox.hpp
@@ -127,9 +127,9 @@ public:
     virtual void deinitialize() = 0;
 };
 
-double metersPerPixelAtLatitude(double latitude, double zoom);
-ProjectedMeters projectedMetersForCoordinate(const Coordinate &);
-Coordinate coordinateForProjectedMeters(const ProjectedMeters &);
+Q_MAPBOXGL_EXPORT double metersPerPixelAtLatitude(double latitude, double zoom);
+Q_MAPBOXGL_EXPORT ProjectedMeters projectedMetersForCoordinate(const Coordinate &);
+Q_MAPBOXGL_EXPORT Coordinate coordinateForProjectedMeters(const ProjectedMeters &);
 
 } // namespace QMapbox