powercoder23
diff --git a/‎__tests__/IndexedSequence.ts
+12 b/‎__tests__/IndexedSequence.ts
+12
diff --git a/‎dist/Immutable.js
+7-4 b/‎dist/Immutable.js
+7-4
@@ -24,4 +24,16 @@ describe('IndexedSequence', () => {
     expect(operated.first()).toEqual('B');
   });
 
+  it('reverses correctly', () => {
+    var seq = Immutable.Sequence.from(['A', 'B', 'C', 'D', 'E']);
+
+    // This is what we expect for IndexedSequences
+    var operated = seq.reverse();
+    expect(operated.get(0)).toEqual('E');
+    expect(operated.get(1)).toEqual('D');
+    expect(operated.get(4)).toEqual('A');
+
+    expect(operated.first()).toEqual('E');
+    expect(operated.last()).toEqual('A');
+  });
 });
@@ -373,7 +373,7 @@ var $Sequence = Sequence;
     return reversed.reduce.apply(reversed, arguments);
   },
   reverse: function() {
-    return reverseFactory(this);
+    return reverseFactory(this, true);
   },
   slice: function(begin, end) {
     if (wholeSlice(begin, end, this.length)) {
@@ -652,6 +652,9 @@ var $IndexedSequence = IndexedSequence;
   lastIndexOf: function(searchValue) {
     return this.toKeyedSeq().reverse().indexOf(searchValue);
   },
+  reverse: function() {
+    return reverseFactory(this, false);
+  },
   splice: function(index, removeNum) {
     var numArgs = arguments.length;
     removeNum = Math.max(removeNum | 0, 0);
@@ -1028,7 +1031,7 @@ var KeyedIndexedSequence = function KeyedIndexedSequence(indexedSeq) {
   },
   reverse: function() {
     var $__0 = this;
-    var reversedSequence = reverseFactory(this);
+    var reversedSequence = reverseFactory(this, true);
     reversedSequence.valueSeq = (function() {
       return $__0._seq.reverse();
     });
@@ -1170,7 +1173,7 @@ function mapFactory(sequence, mapper, context) {
   };
   return mappedSequence;
 }
-function reverseFactory(sequence) {
+function reverseFactory(sequence, useKeys) {
   var reversedSequence = sequence.__makeSequence();
   reversedSequence.length = sequence.length;
   reversedSequence.reverse = (function() {
@@ -1184,7 +1187,7 @@ function reverseFactory(sequence) {
     return flipSequence;
   };
   reversedSequence.get = (function(key, notSetValue) {
-    return sequence.get(key, notSetValue);
+    return sequence.get(useKeys ? key : -1 - key, notSetValue);
   });
   reversedSequence.has = (function(key) {
     return sequence.has(key);