diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 31214282743..d57b5779134 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -6035,8 +6035,9 @@ static void systemctl_help(void) {
                "                      or only disable\n"
                "     --root=PATH      Enable unit files in the specified root directory\n"
                "  -n --lines=INTEGER  Number of journal entries to show\n"
-               "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
-               "                      verbose, export, json, json-pretty, json-sse, cat)\n"
+               "  -o --output=STRING  Change journal output mode (short, short-iso,\n"
+               "                              short-precise, short-monotonic, verbose,\n"
+               "                              export, json, json-pretty, json-sse, cat)\n"
                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
                "Unit Commands:\n"
                "  list-units [PATTERN...]         List loaded units\n"