diff --git a/functions/config_help.fish b/functions/config_help.fish
index 814a6a9..ff90028 100644
--- a/functions/config_help.fish
+++ b/functions/config_help.fish
@@ -42,8 +42,9 @@ function config_help --description 'Open the offline fish shell configuration ma
         set -l norm_kw (string lower -- $argv[1] | string replace -ra '[^a-z0-9]' '')
         set -l found ""
         for entry in (grep -n "^#" "$doc_file")
-            set -l lnum (string split -f 1 ':' -- $entry)
-            set -l text (string split -f 2- ':' -- $entry)
+            set -l parts (string split -m 1 ':' -- $entry)
+            set -l lnum $parts[1]
+            set -l text $parts[2]
             set -l norm_text (string lower -- $text | string replace -ra '[^a-z0-9]' '')
             if string match -q "*$norm_kw*" $norm_text
                 set found $lnum