diff --git a/security/keys/encrypted-keys/masterkey_trusted.c b/security/keys/encrypted-keys/masterkey_trusted.c
index a5da512..df87272 100644
--- a/security/keys/encrypted-keys/masterkey_trusted.c
+++ b/security/keys/encrypted-keys/masterkey_trusted.c
@@ -16,6 +16,7 @@
 
 #include <linux/uaccess.h>
 #include <linux/module.h>
+#include <linux/err.h>
 #include <keys/trusted-type.h>
 
 /*