diff --git a/sys/dev/ex/if_ex.c b/sys/dev/ex/if_ex.c
index d80499903cdb..10bcf32dfeb3 100644
--- a/sys/dev/ex/if_ex.c
+++ b/sys/dev/ex/if_ex.c
@@ -38,8 +38,6 @@
  * 30-Oct-1996: first beta version. Inet and BPF supported, but no multicast.
  */
 
-#include "ex.h"
-
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>