diff --git a/crypto/seqiv.c b/crypto/seqiv.c
index 5a013a8..4c44912 100644
--- a/crypto/seqiv.c
+++ b/crypto/seqiv.c
@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/string.h>