diff --git a/comm/iCE40/notes.html b/comm/iCE40/notes.html
index 9a1dbed4751d78ffd7dbb6d6f184158299101454..d8638f76977073da5e92ab70c400b0cb02e38382 100644
--- a/comm/iCE40/notes.html
+++ b/comm/iCE40/notes.html
@@ -65,7 +65,9 @@ clocks aren't synchronized). At this speed, we see groups of 256 round trips hap
 978Hz. So overall this means the individual round trip frequency is 250kHz.
 </p>
 
-<img src="/img/comm_ring_40mhz.png" alt="oscilloscope measurements">
+<center>
+<img src="./img/comm_ring_40mhz.png" alt="oscilloscope measurements">
+</center>
 
 <p>
 Out of curiosity, I tried running at 48MHz as well and it seemed to work. At 60MHz however it