1 files changed, 1 insertions, 1 deletions

diff --git a/openbsd-compat/bsd-setres_id.c b/openbsd-compat/bsd-setres_id.c
index a8e76bf60..04752d5af 100644
--- a/openbsd-compat/bsd-setres_id.c
+++ b/openbsd-compat/bsd-setres_id.c
@@ -50,7 +50,7 @@ setresgid(gid_t rgid, gid_t egid, gid_t sgid)
         }
         if (setgid(rgid) < 0) {
                 saved_errno = errno;
-                error("setgid %ul: %.100s", (u_long)rgid, strerror(errno));
+                error("setgid %lu: %.100s", (u_long)rgid, strerror(errno));
                 errno = saved_errno;
                 ret = -1;
         }