diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index b860fdc4c0..e2c0982bf3 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -19,6 +19,7 @@ Changelog
  * Fix: Image rendition / document file deletion now happens on a post_delete signal, so that files are not lost if the deletion does not proceed (Janneke Janssen)
  * Fix: "Your recent edits" list on dashboard no longer leaves out pages that another user has subsequently edited (Michael Cordover, Kees Hink, João Luiz Lorencetti)
  * Fix: `InlinePanel` now accepts a `classname` parameter as per the documentation (emg36, Matt Westcott)
+ * Fix: Disabled use of escape key to revert content of rich text fields, which could cause accidental data loss (Matt Westcott)
 
 
 1.6.2 (02.09.2016)
diff --git a/docs/releases/1.7.rst b/docs/releases/1.7.rst
index be9b8a3414..9756063cd5 100644
--- a/docs/releases/1.7.rst
+++ b/docs/releases/1.7.rst
@@ -54,6 +54,7 @@ Bug fixes
  * Image rendition / document file deletion now happens on a post_delete signal, so that files are not lost if the deletion does not proceed (Janneke Janssen)
  * "Your recent edits" list on dashboard no longer leaves out pages that another user has subsequently edited (Michael Cordover, Kees Hink, João Luiz Lorencetti)
  * ``InlinePanel`` now accepts a ``classname`` parameter as per the documentation (emg36, Matt Westcott)
+ * Disabled use of escape key to revert content of rich text fields, which could cause accidental data loss (Matt Westcott)
 
 
 Upgrade considerations
diff --git a/wagtail/wagtailadmin/static_src/wagtailadmin/js/vendor/hallo.js b/wagtail/wagtailadmin/static_src/wagtailadmin/js/vendor/hallo.js
index 9e4655dc45..716fe67041 100644
--- a/wagtail/wagtailadmin/static_src/wagtailadmin/js/vendor/hallo.js
+++ b/wagtail/wagtailadmin/static_src/wagtailadmin/js/vendor/hallo.js
@@ -307,18 +307,8 @@
         }
       },
       _keys: function(event) {
-        var old, widget;
+        var widget;
         widget = event.data;
-        if (event.keyCode === 27) {
-          old = widget.getContents();
-          widget.restoreOriginalContent(event);
-          widget._trigger("restored", null, {
-            editable: widget,
-            content: widget.getContents(),
-            thrown: old
-          });
-          return widget.turnOff();
-        }
       },
       _rangesEqual: function(r1, r2) {
         if (r1.startContainer !== r2.startContainer) {