diff --git a/src/skyparams.h b/src/skyparams.h
index a4d0fadac..2ff918f36 100644
--- a/src/skyparams.h
+++ b/src/skyparams.h
@@ -46,7 +46,7 @@ struct SkyboxParams
 	float body_orbit_tilt { INVALID_SKYBOX_TILT };
 	s16 fog_distance { -1 };
 	float fog_start { -1.0f };
-	video::SColor fog_color; // override, only used if alpha > 0
+	video::SColor fog_color { 0 }; // override, only used if alpha > 0
 };
 
 struct SunParams