1 files changed, 1 insertions, 1 deletions

diff --git a/src/arm/test_gnunet_service_manager.c b/src/arm/test_gnunet_service_manager.c
index dd12bbd31..413a9e760 100644
--- a/src/arm/test_gnunet_service_manager.c
+++ b/src/arm/test_gnunet_service_manager.c
@@ -162,7 +162,7 @@ main (int argc, char *argv[])
       GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
                            "gethostname");
       FPRINTF (stderr,
-               "Failed to determine my own hostname, testcase not run.\n", NULL);
+               "%s", "Failed to determine my own hostname, testcase not run.\n");
       return 0;
     }
   if (NULL == gethostbyname (hostname))