diff --git a/src/quotacheck/quotacheck.c b/src/quotacheck/quotacheck.c
index 4a46c490b22..03dfd68f1ce 100644
--- a/src/quotacheck/quotacheck.c
+++ b/src/quotacheck/quotacheck.c
@@ -85,7 +85,7 @@ static int run(int argc, char *argv[]) {
 
         umask(0022);
 
-        r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
+        r = proc_cmdline_parse(parse_proc_cmdline_item, /* userdata= */ NULL, /* flags= */ 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");