diff --git a/src/gl/renderer/gl_lightdata.cpp b/src/gl/renderer/gl_lightdata.cpp
index 771c4c65c..1e5922d0a 100644
--- a/src/gl/renderer/gl_lightdata.cpp
+++ b/src/gl/renderer/gl_lightdata.cpp
@@ -312,7 +312,7 @@ float gl_GetFogDensity(int lightlevel, PalEntry fogcolor)
 		// case 1: black fog
 		if (glset.lightmode != 8)
 		{
-			density=distfogtable[glset.lightmode!=0][lightlevel];
+			density=distfogtable[glset.lightmode!=0][gl_ClampLight(lightlevel)];
 		}
 		else
 		{