diff --git a/themes/bobthefish/fish_prompt.fish b/themes/bobthefish/fish_prompt.fish
index 7f0179b54fd40b2aa60d3421f2a72914ae185b96..b47b6efcaee53da93dc070240838281b256e166a 100644
--- a/themes/bobthefish/fish_prompt.fish
+++ b/themes/bobthefish/fish_prompt.fish
@@ -107,7 +107,7 @@ function __bobthefish_hg_project_dir -d 'Print the current hg project base direc
   [ "$theme_display_hg" = 'no' ]; and return
   set d (pwd)
   while not [ $d = / ]
-    if test -e $d/.hg
+    if [ -e $d/.hg ]
       command hg root ^/dev/null
       return
     end