diff --git a/crypto/hash.c b/crypto/hash.c
index 140a755..cb86b19 100644
--- a/crypto/hash.c
+++ b/crypto/hash.c
@@ -9,6 +9,7 @@
  * any later version.
  */
 
+#include <crypto/internal/hash.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/module.h>