diff --git a/Source/r_segs.c b/Source/r_segs.c
index d87bc5f1..b3260f27 100644
--- a/Source/r_segs.c
+++ b/Source/r_segs.c
@@ -206,10 +206,11 @@ void R_RenderMaskedSegRange(drawseg_t *ds, int x1, int x2)
         maskedtexturecol[dc_x] = D_MAXINT; // [FG] 32-bit integer math
       }
 
+  // [FG] reset column drawing function
+  colfunc = R_DrawColumn;
+
   // Except for main_tranmap, mark others purgable at this point
   if (curline->linedef->tranlump > 0 && general_translucency)
-   // [FG] make sure to never mark main_tranmap as purgeable
-   if (tranmap != main_tranmap)
     Z_ChangeTag(tranmap, PU_CACHE); // killough 4/11/98
 }