diff --git a/esper-ota.tex b/esper-ota.tex
index 5be492d..5a0587e 100755
--- a/esper-ota.tex
+++ b/esper-ota.tex
@@ -453,7 +453,7 @@ This includes mechanisms to build the updates from source and automatically sign
 % no keywords
 
 \begin{IEEEkeywords}
-IoT, Secure Updates, Over the Air, ESP8266.
+IoT; Secure Updates; Over the Air; ESP8266.
 \end{IEEEkeywords}