diff --git a/include/functions.php b/include/functions.php
index 030d8d50e..36d349b54 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -1938,7 +1938,8 @@
 				"feed_debug_update" => __("Debug feed update"),
 				"catchup_all" => __("Mark all feeds as read"),
 				"cat_toggle_collapse" => __("Un/collapse current category"),
-				"toggle_combined_mode" => __("Toggle combined mode")),
+				"toggle_combined_mode" => __("Toggle combined mode"),
+				"toggle_cdm_expanded" => __("Toggle auto expand in combined mode")),
 			__("Go to") => array(
 				"goto_all" => __("All articles"),
 				"goto_fresh" => __("Fresh"),
@@ -2002,6 +2003,7 @@
 				"f x" => "feed_reverse",
 				"f *d" => "feed_debug_update",
 				"f *c" => "toggle_combined_mode",
+				"f c" => "toggle_cdm_expanded",
 				"*q" => "catchup_all",
 				"x" => "cat_toggle_collapse",
 //			"goto" => array(
diff --git a/js/tt-rss.js b/js/tt-rss.js
index d38b203c1..cb7c0ab2d 100644
--- a/js/tt-rss.js
+++ b/js/tt-rss.js
@@ -483,6 +483,19 @@ function init() {
 						window.location.reload();
 					} });
 		};
+		hotkey_actions["toggle_cdm_expanded"] = function() {
+				notify_progress("Loading, please wait...");
+
+				var value = getInitParam("cdm_expanded") ? "false" : "true";
+				var query = "?op=rpc&method=setpref&key=CDM_EXPANDED&value=" + value;
+
+				new Ajax.Request("backend.php",	{
+					parameters: query,
+					onComplete: function(transport) {
+						setInitParam("cdm_expanded", !getInitParam("cdm_expanded"));
+						viewCurrentFeed();
+					} });
+		};
 
 
 	} catch (e) {