diff --git a/confluent_client/confluent_env.sh b/confluent_client/confluent_env.sh
index c16e1d75..426a7c9b 100644
--- a/confluent_client/confluent_env.sh
+++ b/confluent_client/confluent_env.sh
@@ -157,7 +157,7 @@ _confluent_osimage_completion()
         COMPREPLY=($(compgen -W "initialize import importcheck updateboot rebase" -- ${COMP_WORDS[COMP_CWORD]}))
         return
     elif [ ${CMPARGS[1]} == 'initialize' ]; then
-        COMPREPLY=($(compgen -W "-h -u -s -t -i" -- ${COMP_WORDS[COMP_CWORD]}))
+        COMPREPLY=($(compgen -W "-h -a -g -u -s -k -t -p -i -l -r" -- ${COMP_WORDS[COMP_CWORD]}))
     elif [ ${CMPARGS[1]} == 'import' ] || [ ${CMPARGS[1]} == 'importcheck' ]; then
         compopt -o default
         COMPREPLY=()