diff --git a/rogueviz.cpp b/rogueviz.cpp
index e741bd58..9d726420 100644
--- a/rogueviz.cpp
+++ b/rogueviz.cpp
@@ -1461,13 +1461,14 @@ void drawExtra() {
       cell *c = it->first;
       c->wall = waChasm;
       }
+    int index = 0;
 
     for(map<cell*, transmatrix>::iterator it = gmatrix.begin(); it != gmatrix.end(); it++) {
       cell *c = it->first;
       bool draw = true;
       for(int i=0; i<isize(named); i++) if(named[i] == c) draw = false;
       if(draw && gmatrix.count(c))
-        queuedisk(it->second, dftcolor, false, NULL);
+        queuedisk(it->second, dftcolor, false, NULL, index++);
         // queuepolyat(it->second, shDisk, dftcolor., PPR::LINE);
       }