diff --git a/IV/wm.sql b/IV/wm.sql
index f246702..4aa2776 100644
--- a/IV/wm.sql
+++ b/IV/wm.sql
@@ -179,7 +179,6 @@ declare
   a geometry;
   b geometry;
   bend geometry;
-  this geometry;
   multi geometry;
 begin
   pi = radians(180);