diff --git a/share/tools/web_config/sample_prompts/nim.fish b/share/tools/web_config/sample_prompts/nim.fish
index 6cf21b3b2..aa1c8daa1 100644
--- a/share/tools/web_config/sample_prompts/nim.fish
+++ b/share/tools/web_config/sample_prompts/nim.fish
@@ -116,7 +116,7 @@ function fish_prompt
 
     # Battery status
     type -q acpi
-    and test (acpi -a 2> /dev/null | string match -r off)
+    and acpi -a 2> /dev/null | string match -rq off
     and _nim_prompt_wrapper $retc B (acpi -b | cut -d' ' -f 4-)
 
     # New line