diff --git a/polymer/eduke32/build/include/polymer.h b/polymer/eduke32/build/include/polymer.h
index 7e000e4df..60b52404c 100644
--- a/polymer/eduke32/build/include/polymer.h
+++ b/polymer/eduke32/build/include/polymer.h
@@ -246,6 +246,7 @@ typedef struct      s_prwall {
     int8_t          shade;
     char            pal, xrepeat, yrepeat, xpanning, ypanning;
     char            nwallxpanning, nwallypanning;
+    int8_t          nwallshade;
 
     char            underover;
     uint32_t        invalidid;
diff --git a/polymer/eduke32/build/src/polymer.c b/polymer/eduke32/build/src/polymer.c
index 27402a196..a396ee636 100644
--- a/polymer/eduke32/build/src/polymer.c
+++ b/polymer/eduke32/build/src/polymer.c
@@ -2790,7 +2790,8 @@ static void         polymer_updatewall(int16_t wallnum)
              ((nwallpicnum == w->nwallpicnum) &&
               (wall[nwallnum].xpanning == w->nwallxpanning) &&
               (wall[nwallnum].ypanning == w->nwallypanning) &&
-              (wall[nwallnum].cstat == w->nwallcstat))))
+              (wall[nwallnum].cstat == w->nwallcstat) &&
+              (wall[nwallnum].shade == w->nwallshade))))
     {
         w->flags.uptodate = 1;
         return; // screw you guys I'm going home
@@ -2816,6 +2817,7 @@ static void         polymer_updatewall(int16_t wallnum)
             w->nwallxpanning = wall[nwallnum].xpanning;
             w->nwallypanning = wall[nwallnum].ypanning;
             w->nwallcstat = wall[nwallnum].cstat;
+            w->nwallshade = wall[nwallnum].shade;
         }
     }