diff --git a/src/modules/graphics/opengl/Graphics.cpp b/src/modules/graphics/opengl/Graphics.cpp
index a0d05f6ec..50f0a3e79 100644
--- a/src/modules/graphics/opengl/Graphics.cpp
+++ b/src/modules/graphics/opengl/Graphics.cpp
@@ -1568,7 +1568,7 @@ void Graphics::setColorMask(ColorChannelMask mask)
 
 	uint32 maskbits =
 		((mask.r ? 1 : 0) << 0) | ((mask.g ? 1 : 0) << 1) |
-		((mask.g ? 1 : 0) << 2) | ((mask.a ? 1 : 0) << 3);
+		((mask.b ? 1 : 0) << 2) | ((mask.a ? 1 : 0) << 3);
 
 	gl.setColorWriteMask(maskbits);
 	states.back().colorMask = mask;