diff --git a/browser/base/content/browser-sets.inc b/browser/base/content/browser-sets.inc
index c32aeb8f7c3..e731cd2a3b0 100644
--- a/browser/base/content/browser-sets.inc
+++ b/browser/base/content/browser-sets.inc
@@ -407,7 +407,9 @@
 # overridden for other purposes there.
     <key id="viewBookmarksSidebarWinKb" key="&bookmarksWinCmd.commandkey;" command="viewBookmarksSidebar" modifiers="accel"/>
 #endif
+    
     <key id="sharePage" key="&sharePageCmd.commandkey;" command="Social:SharePage" modifiers="accel,shift"/>
+    <key id="focusChatBar" key="&social.chatBar.commandkey;" oncommand="SocialChatBar.focus();" modifiers="accel,shift"/>
 
 # don't use |command="Browser:Stop"|, ESC is being used to freeze animated gifs,
 # even if the stop button and menuitem are disabled (see Bug 284140)
diff --git a/browser/base/content/browser-social.js b/browser/base/content/browser-social.js
index 8674ba4ac31..4a9c5282859 100644
--- a/browser/base/content/browser-social.js
+++ b/browser/base/content/browser-social.js
@@ -210,6 +210,10 @@ let SocialChatBar = {
   update: function() {
     if (!this.canShow)
       this.chatbar.removeAll();
+  },
+  focus: function SocialChatBar_focus() {
+    let commandDispatcher = gBrowser.ownerDocument.commandDispatcher;
+    commandDispatcher.advanceFocusIntoSubtree(this.chatbar);
   }
 }
 
diff --git a/browser/locales/en-US/chrome/browser/browser.dtd b/browser/locales/en-US/chrome/browser/browser.dtd
index a12e28411f9..2b22ecfeb33 100644
--- a/browser/locales/en-US/chrome/browser/browser.dtd
+++ b/browser/locales/en-US/chrome/browser/browser.dtd
@@ -659,3 +659,5 @@ toolbar button -->
 
 <!ENTITY social.activated.undobutton.label "Undo">
 <!ENTITY social.activated.undobutton.accesskey "U">
+
+<!ENTITY social.chatBar.commandkey "c">