diff --git a/util.c b/util.c
index bd4b40e..17a7111 100644
--- a/util.c
+++ b/util.c
@@ -1256,7 +1256,10 @@ int do_authentication(const cfg_t *cfg, const device_t *devices,
           }
           r = fido_assert_verify(assert, 0, pk.type, pk.ptr);
           if (r == FIDO_OK) {
-            pam_syslog(pamh, LOG_INFO, "Successful FIDO authentication with publicKey %s (idx %u)", devices[i].publicKey, i);
+            pam_syslog(pamh, LOG_INFO,
+                      "Successful FIDO authentication with publicKey %s (idx "
+                      "%u)",
+                      devices[i].publicKey, i);
             retval = 1;
             goto out;
           }