diff --git a/plumb/basic b/plumb/basic
index d40f6a4b..5ab07ec4 100644
--- a/plumb/basic
+++ b/plumb/basic
@@ -64,7 +64,7 @@ type is text
 data matches '([.a-zA-Z¡-￿0-9_/\-]*[a-zA-Z¡-￿0-9_/\-])'$twocolonaddr'
 arg isfile     $1
 data set       $file
-attr add       addr=$2-#0+#$3
+attr add       addr=$2-#1+#$3
 plumb to edit
 plumb client $editor