diff --git a/include/polarssl/md2.h b/include/polarssl/md2.h
index 37eef0a..71040eb 100644
--- a/include/polarssl/md2.h
+++ b/include/polarssl/md2.h
@@ -113,6 +113,13 @@
 void md2_hmac_finish( md2_context *ctx, unsigned char output[16] );
 
 /**
+ * \brief          MD2 HMAC context reset
+ *
+ * \param ctx      HMAC context to be reset
+ */
+void md2_hmac_reset( md2_context *ctx );
+
+/**
  * \brief          Output = HMAC-MD2( hmac key, input buffer )
  *
  * \param key      HMAC secret key