diff --git a/completions/sub.bash b/completions/sub.bash
index 40eac81..fbdc3fd 100644
--- a/completions/sub.bash
+++ b/completions/sub.bash
@@ -5,8 +5,8 @@ _sub() {
   if [ "$COMP_CWORD" -eq 1 ]; then
     COMPREPLY=( $(compgen -W "$(sub commands)" -- "$word") )
   else
-    local command="${COMP_WORDS[1]}"
-    local completions="$(sub completions "$command")"
+    local command="${COMP_WORDS[@]:1:${#COMP_WORDS[@]}-2}"
+    local completions="$(sub completions $command)"
     COMPREPLY=( $(compgen -W "$completions" -- "$word") )
   fi
 }