diff --git a/share/completions/kill.fish b/share/completions/kill.fish
index ea11bb0f5..d9093c9c2 100644
--- a/share/completions/kill.fish
+++ b/share/completions/kill.fish
@@ -1,8 +1,8 @@
 __fish_make_completion_signals
 
 for sig in $__kill_signals[-1..1]
-    set number (string split ' ' $sig)[1]
-    set name (string split ' ' $sig)[2]
+    set -l number (string split ' ' $sig)[1]
+    set -l name (string split ' ' $sig)[2]
     complete -c kill -o $number -d $name
     complete -c kill -o $name -d $number
     complete -c kill -k -s s -x -a "$name\t$number"