diff --git a/impacket/krb5/gssapi.py b/impacket/krb5/gssapi.py
index 948e723b4..f30060acf 100644
--- a/impacket/krb5/gssapi.py
+++ b/impacket/krb5/gssapi.py
@@ -132,7 +132,8 @@ def GSS_Wrap(self, sessionKey, data, sequenceNumber, direction = 'init', encrypt
         token = self.WRAP()
 
         # Let's pad the data
-        pad = (8 - (len(data) % 8)) & 0x7
+        # pad = (8 - (len(data) % 8)) & 0x7
+        pad = (16 - (len(data) % 16)) & 15
         padStr = b(chr(pad)) * pad
         data += padStr