diff --git a/rogueviz/ru/globals.cpp b/rogueviz/ru/globals.cpp
index 97d8b354..9fbafb55 100644
--- a/rogueviz/ru/globals.cpp
+++ b/rogueviz/ru/globals.cpp
@@ -65,7 +65,7 @@ enum eWall {
   wSign, wWallSign, wTimeDoor,
   wBottomSpike, wRogueWallHidden, wRogueWall, wRightSlope, wLeftSlope, wLeftSlopedRoof, wRightSlopedRoof,
   wWeakWall, wStrangeSign, wWalkSpikes, wHyperBouncy,
-  wArenaDoor,
+  wArenaDoor, wGlassWall,
   wGUARD };
 
 flagtype W_BLOCK = 1;
@@ -136,7 +136,8 @@ ruwall walls[qwall] = {
   {"strange sign", "X", 0x90909080, W_TRANS, "A strange sign is drawn in the background."},
   {"walkable spikes", "|", 0xC08080FF, W_TRANS | W_PAIN_DOWN, "You can walk through these spikes, but falling into them would hurt."},
   {"hyper-bouncy wall", "#", 0xC04040FF, W_BLOCK | W_BOUNCY | W_HYPERBOUNCY, "Like walls, but things really bounce off them."},
-  {"arena door", "+", 0x50A000FF, W_BLOCK, "You need to defeat all monsters here to open this door."}
+  {"arena door", "+", 0x50A000FF, W_BLOCK, "You need to defeat all monsters here to open this door."},
+  {"glass wall", "#", 0xA0A0FFFF, W_BLOCK | W_STABLE | W_TRANS, "This wall is tough, but transparent."}
   };
 
 int sel = 1;