diff --git a/include/polarssl/cipher.h b/include/polarssl/cipher.h
index aa0c42a..d4231ff 100644
--- a/include/polarssl/cipher.h
+++ b/include/polarssl/cipher.h
@@ -106,6 +106,7 @@
 
 typedef enum {
     POLARSSL_PADDING_PKCS7 = 0,     /**< PKCS7 padding (default) */
+    POLARSSL_PADDING_ONE_AND_ZEROS, /**< ISO/IEC 7816-4 padding  */
 } cipher_padding_t;
 
 typedef enum {