diff --git a/src/gl/renderer/gl_lightdata.cpp b/src/gl/renderer/gl_lightdata.cpp
index 635e6b292..4668af261 100644
--- a/src/gl/renderer/gl_lightdata.cpp
+++ b/src/gl/renderer/gl_lightdata.cpp
@@ -184,7 +184,7 @@ void gl_SetFog(int lightlevel, int rellight, bool fullbright, const FColormap *c
 	}
 	else
 	{
-		if ((level.lightmode == 2 || (level.lightmode == 8) && cmap->BlendFactor > 0) && fogcolor == 0)
+		if ((level.lightmode == 2 || (level.lightmode == 8 && cmap->BlendFactor > 0)) && fogcolor == 0)
 		{
 			float light = hw_CalcLightLevel(lightlevel, rellight, false, cmap->BlendFactor);
 			gl_SetShaderLight(light, lightlevel);