diff --git a/lib/ace/keyboard/keybinding/default_mac.js b/lib/ace/keyboard/keybinding/default_mac.js
index 2060e40c..005a6c84 100644
--- a/lib/ace/keyboard/keybinding/default_mac.js
+++ b/lib/ace/keyboard/keybinding/default_mac.js
@@ -82,8 +82,11 @@ exports.bindings = {
     "selectlinestart": "Shift-Home",
     "selectlineend": "Shift-End",
     "del": "Delete|Ctrl-D",
-    "backspace": "Ctrl-Backspace|Command-Backspace|Option-Backspace|Shift-Backspace|Backspace|Ctrl-H",
+    "backspace": "Ctrl-Backspace|Command-Backspace|Shift-Backspace|Backspace|Ctrl-H",
     "removetolineend": "Ctrl-K",
+    "removetolinestart": "Option-Backspace",
+    "removewordleft": "Alt-Backspace|Ctrl-Alt-Backspace",
+    "removewordright": "Alt-Delete",
     "outdent": "Shift-Tab",
     "indent": "Tab",
     "transposeletters": "Ctrl-T",