diff --git a/help.cpp b/help.cpp
index 558b25a1..7ebb8542 100644
--- a/help.cpp
+++ b/help.cpp
@@ -701,7 +701,7 @@ void describeMouseover() {
         }
       }
       
-    if(c->wall && 
+    if(c->wall && !(c->wall == waChasm && c->land == laDual && ctof(c)) &&
       !((c->wall == waFloorA || c->wall == waFloorB) && c->item)) { 
       out += ", "; out += XLAT1(winf[c->wall].name);