--- d1x/2d/2dsline.c.orig	1999-10-14 06:48:21.000000000 +0200
+++ d1x/2d/2dsline.c	2004-01-18 19:48:31.746835235 +0100
@@ -131,8 +131,10 @@
 void gr_linear_darken(ubyte * dest, int darkening_level, int count, ubyte * fade_table) {
 	register int i;
 
-	for (i=0;i<count;i++)
-		*dest=fade_table[(*dest++)+(darkening_level*256)];
+	for (i=0;i<count;i++) {
+		*dest=fade_table[(*dest)+(darkening_level*256)];
+		dest++;
+	}
 }
 #endif