--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -1695,22 +1695,17 @@ pref("network.websocket.delay-failed-rec
 // Equal to the DEFAULT_RECONNECTION_TIME_VALUE value in nsEventSource.cpp
 pref("dom.server-events.default-reconnection-time", 5000); // in milliseconds
 
 // If false, remote JAR files that are served with a content type other than
 // application/java-archive or application/x-jar will not be opened
 // by the jar channel.
 pref("network.jar.open-unsafe-types", false);
 // If true, loading remote JAR files using the jar: protocol will be prevented.
-#ifdef RELEASE_OR_BETA
-// Keep allowing remote JAR files for IBM iNotes (see bug 1255139) for now.
-pref("network.jar.block-remote-files", false);
-#else
 pref("network.jar.block-remote-files", true);
-#endif
 
 // This preference, if true, causes all UTF-8 domain names to be normalized to
 // punycode.  The intention is to allow UTF-8 domain names as input, but never
 // generate them from punycode.
 pref("network.IDN_show_punycode", false);
 
 // If "network.IDN.use_whitelist" is set to true, TLDs with
 // "network.IDN.whitelist.tld" explicitly set to true are treated as