diff --git a/include/polarssl/error.h b/include/polarssl/error.h
index 9a3de00..4e5f69e 100644
--- a/include/polarssl/error.h
+++ b/include/polarssl/error.h
@@ -72,6 +72,7 @@
  * SHA4      1  0x007A-0x007A
  * PBKDF2    1  0x007C-0x007C
  * ECP       1  0x007E-0x007E
+ * PKCS5     1  0x007C-0x007C
  *
  * High-level module nr (3 bits - 0x1...-0x8...)
  * Name     ID  Nr of Errors