diff --git a/src/packet.c b/src/packet.c
index 089a2a6a..c6c30bdb 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -263,7 +263,7 @@ int ssh_packet_socket_callback(const void *data, size_t receivedlen, void *user)
                 }
 
                 /* copy the last part from the incoming buffer */
-                packet = packet + to_be_read - current_macsize;
+                packet = ((uint8_t *)data) + processed;
                 if (packet == NULL) {
                     goto error;
                 }