diff --git a/pertools/udp_contention/udp_contention.c b/pertools/udp_contention/udp_contention.c
index 9b8373f3d..5af46dadc 100644
--- a/pertools/udp_contention/udp_contention.c
+++ b/pertools/udp_contention/udp_contention.c
@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include <sys/types.h>
 #include <sys/resource.h>
 #include <sys/socket.h>
@@ -66,8 +68,6 @@ srandomdev(void)
 # endif
 #endif
 
-#include "config.h"
-
 #include "elperiodic.h"
 
 #include "rtpp_types.h"