diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 681b7c3..8d43488 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -2087,7 +2087,8 @@
             return( POLARSSL_ERR_SSL_INVALID_RECORD );
         }
 
-        ssl->handshake->update_checksum( ssl, ssl->in_msg, ssl->in_hslen );
+        if( ssl->state != SSL_HANDSHAKE_OVER )
+            ssl->handshake->update_checksum( ssl, ssl->in_msg, ssl->in_hslen );
 
         return( 0 );
     }