diff --git a/src/test/ReactTestUtils.js b/src/test/ReactTestUtils.js
index da8968085b6..b2e6eb0b1fe 100644
--- a/src/test/ReactTestUtils.js
+++ b/src/test/ReactTestUtils.js
@@ -309,66 +309,6 @@ var ReactTestUtils = {
     return new ReactShallowRenderer();
   },
 
-  jasmineMatchers: {
-    /**
-    * Expect function to perform a console.warn.
-    * If `expectation` is a number, we expect the function to make `expectation` calls to warn.
-    * If `expectation` is a string, we expect that string to appear in the warn output.
-    **/
-    toWarn: function(expectation) {
-      var mocks = require('mocks');
-      var warn = console.warn;
-      console.warn = mocks.getMockFunction();
-      try {
-        this.actual();
-        var consoleLog = console.warn.mock.calls;
-        var result = { pass: false };
-        if (typeof expectation === 'number') {
-          result.pass = consoleLog.length === expectation;
-        } else {
-          // TODO: We may want to additionally handle a javascript regex
-          for (var i = 0; i < consoleLog.length; i++) {
-            if (consoleLog[i][0].indexOf(expectation) >= 0) {
-              result.pass = true;
-            }
-          }
-        }
-
-        this.message = function() {
-          if (result.pass) {
-            if (typeof expectation === 'number') {
-              return 'Expected [' + consoleLog + '].length=' +
-                consoleLog.length + ' NOT to equal expectation (' +
-                expectation + ').';
-            }
-            if (typeof expectation === 'string') {
-              return 'Expected [' + consoleLog +
-                '] NOT to contain expectation (' +
-                expectation + ').';
-            }
-          } else {
-            if (typeof expectation === 'number') {
-              return 'Expected [' + consoleLog + '].length=' +
-                consoleLog.length + ' to equal expectation (' +
-                expectation + ').';
-            }
-            if (typeof expectation === 'string') {
-              return 'Expected [' + consoleLog +
-                '] to contain expectation (' +
-                expectation + ').';
-            }
-          }
-          throw new Error('Assert not reached, unknown expectation type: ' + (typeof expectation));
-        };
-
-        return result.pass;
-      }
-      finally {
-        console.warn = warn;
-      }
-    }
-  },
-
   Simulate: null,
   SimulateNative: {}
 };
diff --git a/src/test/__tests__/ReactTestUtils-test.js b/src/test/__tests__/ReactTestUtils-test.js
index 7f16edc43c0..928d983ed31 100644
--- a/src/test/__tests__/ReactTestUtils-test.js
+++ b/src/test/__tests__/ReactTestUtils-test.js
@@ -14,13 +14,23 @@
 var React;
 var ReactTestUtils;
 
+var mocks;
+var warn;
+
 describe('ReactTestUtils', function() {
 
   beforeEach(function() {
+    mocks = require('mocks');
+
     React = require('React');
     ReactTestUtils = require('ReactTestUtils');
 
-    this.addMatchers(ReactTestUtils.jasmineMatchers);
+    warn = console.warn;
+    console.warn = mocks.getMockFunction();
+  });
+
+  afterEach(function() {
+    console.warn = warn;
   });
 
   it('should have shallow rendering', function() {
@@ -110,17 +120,4 @@ describe('ReactTestUtils', function() {
     expect(scryResults.length).toBe(0);
 
   });
-
-  it('expect console warn message success (jasmine integration)', function() {
-    expect(function(){console.warn('candy');}).toWarn('candy');
-    expect(function(){console.warn('candy');}).toWarn(1);
-  });
-
-  it('expect console warn to return true/false (direct invocation)', function() {
-    var scope = { actual: function(){console.warn('candy');} };
-    expect((ReactTestUtils.jasmineMatchers.toWarn.bind(scope))('candy')).toBe(true);
-    expect(ReactTestUtils.jasmineMatchers.toWarn.bind(scope)('ice cream')).toBe(false);
-    expect(ReactTestUtils.jasmineMatchers.toWarn.bind(scope)(1)).toBe(true);
-    expect(ReactTestUtils.jasmineMatchers.toWarn.bind(scope)(2)).toBe(false);
-  });
 });