diff --git a/templates/fish.txt b/templates/fish.txt
index 8b349dc..76540ba 100644
--- a/templates/fish.txt
+++ b/templates/fish.txt
@@ -19,7 +19,7 @@ end
 # A copy of fish's internal cd function. This makes it possible to use
 # `alias cd=z` without causing an infinite loop.
 if ! builtin functions --query __zoxide_cd_internal
-    string replace --regex -- '^function cd' 'function __zoxide_z_internal' <$__fish_data_dir/functions/cd.fish | source
+    string replace --regex -- '^function cd\s' 'function __zoxide_cd_internal ' <$__fish_data_dir/functions/cd.fish | source
 end
 
 # cd + custom logic based on the value of _ZO_ECHO.