diff --git a/shaders/gbuffers_basic.vsh b/shaders/gbuffers_basic.vsh
index da83c0c..4c5e85b 100644
--- a/shaders/gbuffers_basic.vsh
+++ b/shaders/gbuffers_basic.vsh
@@ -28,7 +28,7 @@ void main() {
 	#endif
 
 	#ifdef tWarp
-		gl_Position /= gl_Position.w;
+		gl_Position /= abs(gl_Position.w);
 	#endif
 }