diff --git a/share/tools/web_config/sample_prompts/pythonista.fish b/share/tools/web_config/sample_prompts/pythonista.fish
index f40b7e7d9..401f1d04f 100644
--- a/share/tools/web_config/sample_prompts/pythonista.fish
+++ b/share/tools/web_config/sample_prompts/pythonista.fish
@@ -22,7 +22,7 @@ function fish_prompt
 
     # Line 2
     echo
-    if test $VIRTUAL_ENV
+    if test -n "$VIRTUAL_ENV"
         printf "(%s) " (set_color blue)(basename $VIRTUAL_ENV)(set_color normal)
     end
     printf '↪ '