diff --git a/include/linux/ppp_defs.h b/include/linux/ppp_defs.h
index 6e8adc77522c..1c866bda2018 100644
--- a/include/linux/ppp_defs.h
+++ b/include/linux/ppp_defs.h
@@ -25,6 +25,8 @@
  * OR MODIFICATIONS.
  */
 
+#include <linux/types.h>
+
 /*
  *  ==FILEVERSION 20000114==
  *