diff --git a/shader.md b/shader.md
index aff55d3..6b93594 100644
--- a/shader.md
+++ b/shader.md
@@ -227,7 +227,7 @@ Material that reads a texture, a color and multiples them, fragment program:
 uniform color modulate;
 uniform texture source;
 
-DIFFUSE = color.rgb * tex(source,UV).rgb;
+DIFFUSE = modulate.rgb * tex(source,UV).rgb;
 
 ```