diff --git a/modules/libpref/src/init/all.js b/modules/libpref/src/init/all.js
index 0b8612f595e..408f2cfe0ed 100644
--- a/modules/libpref/src/init/all.js
+++ b/modules/libpref/src/init/all.js
@@ -1014,6 +1014,7 @@ pref("network.IDN.whitelist.ac", true);
 pref("network.IDN.whitelist.ar", true);
 pref("network.IDN.whitelist.at", true);
 pref("network.IDN.whitelist.br", true);
+pref("network.IDN.whitelist.ca", true);
 pref("network.IDN.whitelist.ch", true);
 pref("network.IDN.whitelist.cl", true);
 pref("network.IDN.whitelist.cn", true);