diff --git a/share/functions/__fish_complete_groups.fish b/share/functions/__fish_complete_groups.fish
index 051f66663..523412d5a 100644
--- a/share/functions/__fish_complete_groups.fish
+++ b/share/functions/__fish_complete_groups.fish
@@ -1,8 +1,8 @@
 
 function __fish_complete_groups --description "Print a list of local groups, with group members as the description"
     if command -sq getent
-        getent group | cut -d ':' -f 1,4 | sed 's/:/\t/'
+        getent group | cut -d ':' -f 1,4 | string replace : \t
     else
-        cut -d ':' -f 1,4 /etc/group | sed 's/:/\t/'
+        cut -d ':' -f 1,4 /etc/group | string replace : \t
     end
 end