diff --git a/README.md b/README.md
index 6418142a3..3479f2b75 100644
--- a/README.md
+++ b/README.md
@@ -129,7 +129,7 @@ Check out our FAQs and get answers to common questions:
 
 + https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions
 
-Talk to us on IRC:
+Talk to us on IRC (Internet Relay Chat):
 
 + #pdfjs on irc.mozilla.org