diff --git a/libs/geom/include/psemek/geom/camera.hpp b/libs/geom/include/psemek/geom/camera.hpp
index c9ca2d9c..62f55a1b 100644
--- a/libs/geom/include/psemek/geom/camera.hpp
+++ b/libs/geom/include/psemek/geom/camera.hpp
@@ -69,8 +69,9 @@ namespace psemek::geom
 		void set_fov(float fov_y, float aspect_ratio);
 	};
 
+	template <typename BaseCamera>
 	struct matrix_camera
-		: perspective_camera
+		: BaseCamera
 	{
 		matrix<float, 4, 4> view_matrix;