diff --git a/cookbook/external_completers.md b/cookbook/external_completers.md
index 37248648eff..bb4cfb98a97 100644
--- a/cookbook/external_completers.md
+++ b/cookbook/external_completers.md
@@ -20,7 +20,7 @@ This completer will use [the fish shell](https://fishshell.com/) to handle compl
 
 ```nu
 let fish_completer = {|spans|
-    fish --command $'complete "--do-complete=($spans | str join " ")"'
+    fish --command $"complete '--do-complete=($spans | str join ' ')'"
     | from tsv --flexible --noheaders --no-infer
     | rename value description
     | update value {