diff --git a/_posts/2018-07-13-about-mtu.md b/_posts/2018-07-13-about-mtu.md
index 0e05b35..0131f87 100644
--- a/_posts/2018-07-13-about-mtu.md
+++ b/_posts/2018-07-13-about-mtu.md
@@ -37,7 +37,7 @@ themselves!
 
 Therefore it is reasonable to surmise that less context switches and less packet
 headers are better. Using an MTU of 65535 over 1500 packs in almost 43 times
-more data before the next set of headers. That's almost 840 bytes saved from IP
+more data before the next set of headers. That's almost 1680 bytes saved from IP
 headers alone over 65535 bytes! But sending a 65535 byte Yggdrasil packet over a
 link with an MTU of 1500 would require the packet to be fragmented 43 times,
 right?