diff --git a/shell-completion/bash/journalctl b/shell-completion/bash/journalctl
index 4a7e0da1ab..321d439f0c 100644
--- a/shell-completion/bash/journalctl
+++ b/shell-completion/bash/journalctl
@@ -47,7 +47,7 @@ _journalctl() {
                               --version --list-catalog --update-catalog --list-boots
                               --show-cursor --dmesg -k --pager-end -e -r --reverse
                               --utc -x --catalog --no-full --force --dump-catalog
-                              --flush --rotate'
+                              --flush --rotate --sync'
                        [ARG]='-b --boot --this-boot -D --directory --file -F --field
                               -o --output -u --unit --user-unit -p --priority
                               --vacuum-size --vacuum-time'