diff --git a/cabbages/traveller.csd b/cabbages/traveller.csd
index c97a780..fc9f091 100644
--- a/cabbages/traveller.csd
+++ b/cabbages/traveller.csd
@@ -50,6 +50,8 @@ instr 1
         turnoff
     endif
     
+    inotnum notnum
+    
     iwave chnget "mode"
     if iwave==1 then
         ; triangle
@@ -111,7 +113,7 @@ instr 1
     endif
     
     if iwave==7 then
-        kfilter = p4 + kbnd
+        kfilter = cpsmidinn(inotnum + 24) + kbnd
     endif
     
     if iquack==1 then