diff --git a/scene/register_scene_types.cpp b/scene/register_scene_types.cpp
index b7c98b0ea9a..3727c788fde 100644
--- a/scene/register_scene_types.cpp
+++ b/scene/register_scene_types.cpp
@@ -1220,6 +1220,7 @@ void unregister_scene_types() {
 	PhysicalSkyMaterial::cleanup_shader();
 	PanoramaSkyMaterial::cleanup_shader();
 	ProceduralSkyMaterial::cleanup_shader();
+	FogMaterial::cleanup_shader();
 #endif // _3D_DISABLED
 
 	ParticleProcessMaterial::finish_shaders();