Index: fish/functions/fish_prompt.fish
==================================================================
--- fish/functions/fish_prompt.fish
+++ fish/functions/fish_prompt.fish
@@ -9,11 +9,11 @@
 
     set -l branch (git symbolic-ref HEAD 2>/dev/null)
     set branch (string replace -r "^refs/heads/" "" $branch)
     
     if test -z "$branch"
-        set branch (fossil branch current)
+        set branch (fossil branch current 2>/dev/null)
     end
 
     set -l vcs
     if test -n "$branch"
         set vcs (set_color $fish_color_vcs_braces)"(" \