diff --git a/src/rendering/hwrenderer/hw_entrypoint.cpp b/src/rendering/hwrenderer/hw_entrypoint.cpp
index 948e4a1a66..5c9d50e649 100644
--- a/src/rendering/hwrenderer/hw_entrypoint.cpp
+++ b/src/rendering/hwrenderer/hw_entrypoint.cpp
@@ -200,7 +200,7 @@ sector_t* RenderViewpoint(FRenderViewpoint& mainvp, AActor* camera, IntRect* bou
 	}
 
 	auto& list = RenderState.GetVisibleSurfaceList();
-	if (list.Size() <= lm_background_updates)
+	if (list.Size() < lm_background_updates)
 	{
 		int index = 0;
 		for (auto& e : level.levelMesh->Surfaces)