diff --git a/sys/opencrypto/cryptodev.c b/sys/opencrypto/cryptodev.c
index 472a90210508..bf461381cfbd 100644
--- a/sys/opencrypto/cryptodev.c
+++ b/sys/opencrypto/cryptodev.c
@@ -54,6 +54,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/module.h>
 #include <sys/fcntl.h>
 #include <sys/bus.h>
+#include <sys/user.h>
 
 #include <opencrypto/cryptodev.h>
 #include <opencrypto/xform.h>