diff --git a/net/dccp/ccid.c b/net/dccp/ccid.c
index 49d27c5..36479ca 100644
--- a/net/dccp/ccid.c
+++ b/net/dccp/ccid.c
@@ -11,6 +11,8 @@
  *	published by the Free Software Foundation.
  */
 
+#include <linux/slab.h>
+
 #include "ccid.h"
 #include "ccids/lib/tfrc.h"