diff --git a/orbgen.cpp b/orbgen.cpp
index 8d115f79..68ba3f7b 100644
--- a/orbgen.cpp
+++ b/orbgen.cpp
@@ -264,8 +264,8 @@ eOrbLandRelation getOLR(eItem it, eLand l) {
       return olrDangerous;
     
   if(it == itOrbMatter)
-    if(l == laCaves || l == laEmerald || l == laAlchemist || l == laCaribbean || 
-      l == laMinefield || l == laCocytus) return olrUseless;
+    if(among(l, laCaves, laEmerald, laAlchemist, laCaribbean, laMinefield, laCocytus, laWestWall))
+      return olrUseless;
 
   if(l == laPrincessQuest)
     if(among(it, itOrbAether, itOrbFlash, itOrbTeleport, itOrbSummon, itOrbFreedom, itOrbFriend, itOrbPhasing))
diff --git a/orbs.cpp b/orbs.cpp
index 3922a041..e183e0b3 100644
--- a/orbs.cpp
+++ b/orbs.cpp
@@ -829,6 +829,7 @@ void summonAt(cell *dest) {
   }
 
 bool tempWallPossibleAt(cell *dest) {
+  if(dest->land == laWestWall) return false;
   if(dest->monst || (dest->item && !itemHidden(dest))) return false;
   return dest->wall == waChasm || isWatery(dest) || dest->wall == waNone ||
     dest->wall == waTempBridge;