diff --git a/examples/gpu/data/test.vsh b/examples/gpu/data/test.vsh
index 13d356f..37293ae 100644
--- a/examples/gpu/data/test.vsh
+++ b/examples/gpu/data/test.vsh
@@ -37,7 +37,7 @@
 		; result.color = crappy lighting
 		dp3 r0, c8, v2 (0x4)
 		max r0, c20, r0 (0x9)
-		mul r0, c9, r0 (0x8)
+		mul r0, c9, r0 (0x4)
 		add o1, c9, r0 (0x4)
 		mov o1, c20 (0x3)
 		nop