diff --git a/crypto/asymmetric_keys/x509_parser.h b/crypto/asymmetric_keys/x509_parser.h
index e583ad09e5a1c5b7e45942602d6022b804a9f3ce..2d01182147703a551811cecad91f34ae5589d66f 100644
--- a/crypto/asymmetric_keys/x509_parser.h
+++ b/crypto/asymmetric_keys/x509_parser.h
@@ -9,6 +9,7 @@
  * 2 of the Licence, or (at your option) any later version.
  */
 
+#include <linux/time.h>
 #include <crypto/public_key.h>
 
 struct x509_certificate {