--- warsow_0.7_sdk/source/gameshared/gs_pmove.c 2011-10-28 08:07:48.000000000 +0200
+++ warsow_0.7_sdk_fixed/source/gameshared/gs_pmove.c   2012-06-05 14:20:57.673399818 +0200
@@ -188,7 +188,7 @@ static void PlayerTouchWall( int nbTestD

        if( trace.fraction > 0 )
        {
-           if( dist > trace.fraction && abs( trace.plane.normal[2] ) < maxZnormal )
+           if( dist > trace.fraction && fabs( trace.plane.normal[2] ) < maxZnormal )
            {
                dist = trace.fraction;
                VectorCopy( trace.plane.normal, *normal );