diff --git a/IPython/html/static/notebook/js/notebook.js b/IPython/html/static/notebook/js/notebook.js
index 0fe0df2..ec89cc2 100644
--- a/IPython/html/static/notebook/js/notebook.js
+++ b/IPython/html/static/notebook/js/notebook.js
@@ -319,6 +319,11 @@ var IPython = (function (IPython) {
                 that.undelete();
                 that.control_key_active = false;
                 return false;
+            } else if (event.which === 189 && that.control_key_active) {
+                // Split cell = -
+                that.split_cell();
+                that.control_key_active = false;
+                return false;                                               
             } else if (that.control_key_active) {
                 that.control_key_active = false;
                 return true;
diff --git a/IPython/html/static/notebook/js/quickhelp.js b/IPython/html/static/notebook/js/quickhelp.js
index 568fa37..dc83a9e 100644
--- a/IPython/html/static/notebook/js/quickhelp.js
+++ b/IPython/html/static/notebook/js/quickhelp.js
@@ -32,6 +32,7 @@ var IPython = (function (IPython) {
             {key: 'Ctrl-m v', help: 'paste cell'},
             {key: 'Ctrl-m d', help: 'delete cell'},
             {key: 'Ctrl-m z', help: 'undo last cell deletion'},
+            {key: 'Ctrl-m -', help: 'split cell'},            
             {key: 'Ctrl-m a', help: 'insert cell above'},
             {key: 'Ctrl-m b', help: 'insert cell below'},
             {key: 'Ctrl-m o', help: 'toggle output'},