diff --git a/CHANGELOG b/CHANGELOG
index c8f181288..48cd7459a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -33,6 +33,7 @@ CHANGELOG Roundcube Webmail
 - Fix handling of plus character in mailto: links (#1490510)
 - Fix so adding CC/BCC recipients from the sidebar unhides compose form fields in Classic skin (#1490472)
 - Fix so gc.sh script removes also expired sessions from sql database (#1490512)
+- Fix support for Mozilla-based browsers, e.g. Pale Moon (#1490517)
 
 RELEASE 1.1.2
 -------------
diff --git a/program/js/app.js b/program/js/app.js
index e1c5fc327..3c660b820 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -156,8 +156,8 @@ function rcube_webmail()
     var n;
     this.task = this.env.task;
 
-    // check browser
-    if (this.env.server_error != 409 && (!bw.dom || !bw.xmlhttp_test() || (bw.mz && bw.vendver < 1.9) || (bw.ie && bw.vendver < 7))) {
+    // check browser capabilities (never use version checks here)
+    if (this.env.server_error != 409 && (!bw.dom || !bw.xmlhttp_test())) {
       this.goto_url('error', '_code=0x199');
       return;
     }