diff --git a/browser/locales/en-US/chrome/browser-region/region.properties b/browser/locales/en-US/chrome/browser-region/region.properties
index 087cc5079661..e078ed528733 100644
--- a/browser/locales/en-US/chrome/browser-region/region.properties
+++ b/browser/locales/en-US/chrome/browser-region/region.properties
@@ -13,7 +13,7 @@ browser.search.order.3=Bing
 # This is the default set of web based feed handlers shown in the reader
 # selection UI
 browser.contentHandlers.types.0.title=My Yahoo!
-browser.contentHandlers.types.0.uri=http://add.my.yahoo.com/rss?url=%s
+browser.contentHandlers.types.0.uri=https://add.my.yahoo.com/rss?url=%s
 
 # increment this number when anything gets changed in the list below.  This will
 # cause Firefox to re-read these prefs and inject any new handlers into the 
diff --git a/mobile/locales/en-US/chrome/region.properties b/mobile/locales/en-US/chrome/region.properties
index 2af736f8f8b6..762502ab1b76 100644
--- a/mobile/locales/en-US/chrome/region.properties
+++ b/mobile/locales/en-US/chrome/region.properties
@@ -30,4 +30,4 @@ gecko.handlerService.schemes.mailto.1.uriTemplate=https://mail.google.com/mail/?
 # This is the default set of web based feed handlers shown in the reader
 # selection UI
 browser.contentHandlers.types.0.title=My Yahoo!
-browser.contentHandlers.types.0.uri=http://add.my.yahoo.com/rss?url=%s
+browser.contentHandlers.types.0.uri=https://add.my.yahoo.com/rss?url=%s