diff --git a/lib/onTab.js b/lib/onTab.js
index cd068f3..ce917c8 100644
--- a/lib/onTab.js
+++ b/lib/onTab.js
@@ -1,5 +1,6 @@
 var Draft = require('draft-js');
 var getIndentation = require('./utils/getIndentation');
+var removeIndent = require('./utils/removeIndent');
 
 // TODO: tab should complete indentation instead of just inserting one
 
@@ -13,6 +14,10 @@ var getIndentation = require('./utils/getIndentation');
 function onTab(e, editorState) {
   e.preventDefault();
 
+  if (e.shiftKey) {
+    return removeIndent(editorState) || editorState;
+  }
+
   var contentState = editorState.getCurrentContent();
   var selection = editorState.getSelection();
   var startKey = selection.getStartKey();