diff --git a/src/gl/renderer/gl_scene.cpp b/src/gl/renderer/gl_scene.cpp
index 5d54b57c9c..9186c4c77a 100644
--- a/src/gl/renderer/gl_scene.cpp
+++ b/src/gl/renderer/gl_scene.cpp
@@ -152,6 +152,9 @@ sector_t * FGLRenderer::RenderViewpoint (FRenderViewpoint &mainvp, AActor * came
 {
 	R_SetupFrame (mainvp, r_viewwindow, camera);
 
+	if (mainview && toscreen)
+		UpdateShadowMap(camera->Level);
+
     // Render (potentially) multiple views for stereo 3d
 	// Fixme. The view offsetting should be done with a static table and not require setup of the entire render state for the mode.
 	auto vrmode = VRMode::GetVRMode(mainview && toscreen);