diff --git a/share/functions/__fish_hg_prompt.fish b/share/functions/__fish_hg_prompt.fish
index 9e7663053..6a4a3e721 100644
--- a/share/functions/__fish_hg_prompt.fish
+++ b/share/functions/__fish_hg_prompt.fish
@@ -37,7 +37,7 @@ function __fish_hg_prompt --description 'Write out the hg prompt'
             break
         end
         # Go up one directory
-        set -l dir (string replace -r '[^/]*/?$' '' $dir)
+        set dir (string replace -r '[^/]*/?$' '' $dir)
     end
 
     if test -z "$root"