diff --git a/application/palemoon/branding/shared/pref/uaoverrides.inc b/application/palemoon/branding/shared/pref/uaoverrides.inc
index 567956640..3e28225f4 100644
--- a/application/palemoon/branding/shared/pref/uaoverrides.inc
+++ b/application/palemoon/branding/shared/pref/uaoverrides.inc
@@ -63,6 +63,7 @@ pref("@GUAO_PREF@.deviantart.com","Mozilla/5.0 (@OS_SLICE@ rv:@GRE_VERSION@) @GR
 pref("@GUAO_PREF@.deviantart.net","Mozilla/5.0 (@OS_SLICE@ rv:@GRE_VERSION@) @GRE_DATE_SLICE@ @PM_SLICE@");
 pref("@GUAO_PREF@.altibox.dk","Mozilla/5.0 (@OS_SLICE@ rv:@GRE_VERSION@) @GRE_DATE_SLICE@ @PM_SLICE@");
 pref("@GUAO_PREF@.altibox.no","Mozilla/5.0 (@OS_SLICE@ rv:@GRE_VERSION@) @GRE_DATE_SLICE@ @PM_SLICE@");
+pref("@GUAO_PREF@.firefox.com","Mozilla/5.0 (@OS_SLICE@ rv:@GRE_VERSION@) @GRE_DATE_SLICE@ @PM_SLICE@");
 
 // UA-Sniffing domains below have indicated no interest in supporting Pale Moon (BOO!)
 pref("@GUAO_PREF@.humblebundle.com","Mozilla/5.0 (@OS_SLICE@ rv:@GK_VERSION@) @GK_SLICE@ @FX_SLICE@ (Pale Moon)");