diff --git a/src/Codeception/Specify.php b/src/Codeception/Specify.php
index 53dc163..8e4af76 100644
--- a/src/Codeception/Specify.php
+++ b/src/Codeception/Specify.php
@@ -3,8 +3,10 @@
 
 use Codeception\Specify\Config;
 use Codeception\Specify\ConfigBuilder;
+use Codeception\Specify\ObjectProperty;
 
-trait Specify {
+trait Specify
+{
 
     private $beforeSpecify = array();
     private $afterSpecify = array();
@@ -27,7 +29,7 @@ private function specifyInit()
         if (!$this->specifyConfig) $this->specifyConfig = Config::create();
     }
 
-	function specify($specification, \Closure $callable = null, $params = [])
+    function specify($specification, \Closure $callable = null, $params = [])
     {
         if (!$callable) return;
         $this->specifyInit();
@@ -38,7 +40,7 @@ function specify($specification, \Closure $callable = null, $params = [])
 
         $this->setName($newName);
 
-        $properties = get_object_vars($this);
+        $properties = $this->getSpecifyObjectProperties();
 
         // prepare for execution
         $throws = $this->getSpecifyExpectedException($params);
@@ -58,13 +60,12 @@ function specify($specification, \Closure $callable = null, $params = [])
                     if ($closure instanceof \Closure) $closure->__invoke();
                 }
             }
+
             $this->specifyExecute($test, $throws, $example);
 
             // restore object properties
-            foreach ($properties as $property => $val) {
-                if ($this->specifyConfig->propertyIgnored($property)) continue;
-                $this->$property = $val;
-            }
+            $this->specifyRestoreProperties($properties);
+
             if (!empty($this->afterSpecify) && is_array($this->afterSpecify)) {
                 foreach ($this->afterSpecify as $closure) {
                     if ($closure instanceof \Closure) $closure->__invoke();
@@ -120,8 +121,10 @@ private function specifyExecute($test, $throws = false, $examples = array())
         }
 
         $result = $this->getTestResultObject();
+
         try {
             call_user_func_array($test, $examples);
+            $this->specifyCheckMockObjects();
         } catch (\PHPUnit_Framework_AssertionFailedError $e) {
             if ($throws !== get_class($e)){
                 $result->addFailure(clone($this), $e, $result->time());
@@ -179,29 +182,86 @@ function cleanSpecify()
     }
 
     /**
-     * @param $properties
-     * @return array
+     * @param ObjectProperty[] $properties
      */
     private function specifyCloneProperties($properties)
     {
-        foreach ($properties as $property => $val) {
-            if ($this->specifyConfig->propertyIgnored($property)) {
-                continue;
-            }
-            if ($this->specifyConfig->classIgnored($val)) {
+        foreach ($properties as $property) {
+            $propertyName = $property->getName();
+            $propertyValue = $property->getValue();
+
+            if ($this->specifyConfig->classIgnored($propertyValue)) {
                 continue;
             }
 
-            if ($this->specifyConfig->propertyIsShallowCloned($property)) {
-                if (is_object($val)) {
-                    $this->$property = clone $val;
+            if ($this->specifyConfig->propertyIsShallowCloned($propertyName)) {
+                if (is_object($propertyValue)) {
+                    $property->setValue(clone $propertyValue);
                 } else {
-                    $this->$property = $val;
+                    $property->setValue($propertyValue);
                 }
             }
-            if ($this->specifyConfig->propertyIsDeeplyCloned($property)) {
-                $this->$property = $this->copier->copy($val);
+
+            if ($this->specifyConfig->propertyIsDeeplyCloned($propertyName)) {
+                $property->setValue($this->copier->copy($propertyValue));
             }
         }
     }
+
+    /**
+     * @param ObjectProperty[] $properties
+     */
+    private function specifyRestoreProperties($properties)
+    {
+        foreach ($properties as $property) {
+            $property->restoreValue();
+        }
+    }
+
+    /**
+     * @return ObjectProperty[]
+     */
+    private function getSpecifyObjectProperties()
+    {
+        $properties = [];
+
+        foreach (get_object_vars($this) as $property => $value) {
+            if ($this->specifyConfig->propertyIgnored($property)) {
+                continue;
+            }
+
+            $properties[] = new ObjectProperty($this, $property, $value);
+        }
+
+        // isolate mockObjects property from PHPUnit_Framework_TestCase
+        if (($phpUnitReflection = $this->specifyGetPhpUnitReflection()) !== null) {
+            $properties[] = $mockObjects = new ObjectProperty(
+                $this, $phpUnitReflection->getProperty('mockObjects')
+            );
+
+            // remove all mock objects inherited from parent scope(s)
+            $mockObjects->setValue([]);
+        }
+
+        return $properties;
+    }
+
+    private function specifyCheckMockObjects()
+    {
+        if (($phpUnitReflection = $this->specifyGetPhpUnitReflection()) !== null) {
+            $verifyMockObjects = $phpUnitReflection->getMethod('verifyMockObjects');
+            $verifyMockObjects->setAccessible(true);
+            $verifyMockObjects->invoke($this);
+        }
+    }
+
+    /**
+     * @return \ReflectionClass|null
+     */
+    private function specifyGetPhpUnitReflection()
+    {
+        if ($this instanceof \PHPUnit_Framework_TestCase) {
+            return new \ReflectionClass('\PHPUnit_Framework_TestCase');
+        }
+    }
 }
diff --git a/src/Codeception/Specify/ObjectProperty.php b/src/Codeception/Specify/ObjectProperty.php
new file mode 100644
index 0000000..dcdc462
--- /dev/null
+++ b/src/Codeception/Specify/ObjectProperty.php
@@ -0,0 +1,78 @@
+<?php
+namespace Codeception\Specify;
+
+/**
+ * Helper for manipulating by an object property.
+ *
+ * @author Roman Ishchenko <roman@ishchenko.ck.ua>
+ */
+class ObjectProperty
+{
+    /**
+     * @var mixed
+     */
+    private $_owner;
+
+    /**
+     * @var \ReflectionProperty|string
+     */
+    private $_property;
+
+    /**
+     * @var mixed
+     */
+    private $_initValue;
+
+    /**
+     * ObjectProperty constructor.
+     *
+     * @param $owner
+     * @param $property
+     * @param $value
+     */
+    public function __construct($owner, $property, $value = null)
+    {
+        $this->_owner = $owner;
+        $this->_property = $property;
+
+        if (!($this->_property instanceof \ReflectionProperty)) {
+            $this->_property = new \ReflectionProperty($owner, $this->_property);
+        }
+
+        $this->_property->setAccessible(true);
+
+        $this->_initValue = ($value === null ? $this->getValue() : $value);
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->_property->getName();
+    }
+
+    /**
+     * Restores initial value
+     */
+    public function restoreValue()
+    {
+        $this->setValue($this->_initValue);
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getValue()
+    {
+        return $this->_property->getValue($this->_owner);
+    }
+
+    /**
+     * @param mixed $value
+     */
+    public function setValue($value)
+    {
+        $this->_property->setValue($this->_owner, $value);
+    }
+}
diff --git a/tests/ObjectPropertyTest.php b/tests/ObjectPropertyTest.php
new file mode 100644
index 0000000..45c90dc
--- /dev/null
+++ b/tests/ObjectPropertyTest.php
@@ -0,0 +1,66 @@
+<?php
+require_once __DIR__.'/../vendor/autoload.php';
+
+class ObjectPropertyTest extends \PHPUnit_Framework_TestCase
+{
+    private $private = 'private';
+
+    public function testConstruction()
+    {
+        $this->prop = 'test';
+
+        $prop = new \Codeception\Specify\ObjectProperty($this, 'prop');
+
+        $this->assertEquals('prop', $prop->getName());
+        $this->assertEquals('test', $prop->getValue());
+
+        $prop = new \Codeception\Specify\ObjectProperty($this, 'private');
+
+        $this->assertEquals('private', $prop->getName());
+        $this->assertEquals('private', $prop->getValue());
+
+        $prop = new \Codeception\Specify\ObjectProperty(
+            $this, new ReflectionProperty($this, 'private')
+        );
+
+        $this->assertEquals('private', $prop->getName());
+        $this->assertEquals('private', $prop->getValue());
+    }
+
+    public function testRestore()
+    {
+        $this->prop = 'test';
+
+        $prop = new \Codeception\Specify\ObjectProperty($this, 'prop');
+        $prop->setValue('another value');
+
+        $this->assertEquals('another value', $this->prop);
+
+        $prop->restoreValue();
+
+        $this->assertEquals('test', $this->prop);
+
+        $prop = new \Codeception\Specify\ObjectProperty($this, 'private');
+        $prop->setValue('another private value');
+
+        $this->assertEquals('another private value', $this->private);
+
+        $prop->restoreValue();
+
+        $this->assertEquals('private', $this->private);
+
+        $prop = new \Codeception\Specify\ObjectProperty($this, 'prop', 'testing');
+
+        $this->assertEquals('test', $prop->getValue());
+
+        $prop->setValue('Hello, World!');
+
+        $this->assertEquals($prop->getValue(), $this->prop);
+        $this->assertEquals('Hello, World!', $prop->getValue());
+
+        $prop->restoreValue();
+
+        $this->assertEquals($prop->getValue(), $this->prop);
+        $this->assertEquals('testing', $prop->getValue());
+    }
+}
diff --git a/tests/SpecifyTest.php b/tests/SpecifyTest.php
index 0d91c9a..14407b9 100644
--- a/tests/SpecifyTest.php
+++ b/tests/SpecifyTest.php
@@ -279,6 +279,24 @@ public function testExamplesIndexInName()
         });
     }
 
+    public function testMockObjectsIsolation()
+    {
+        $mock = $this->getMock(get_class($this), ['testMockObjectsIsolation']);
+        $mock->expects($this->once())->method('testMockObjectsIsolation');
+
+        $this->specify('this should fail', function () {
+            $mock = $this->getMock(get_class($this), ['testMockObjectsIsolation']);
+            $mock->expects($this->exactly(100500))->method('testMockObjectsIsolation');
+        }, ['throws' => 'PHPUnit_Framework_ExpectationFailedException']);
+
+        $this->specify('this should not fail', function () {
+            $mock = $this->getMock(get_class($this), ['testMockObjectsIsolation']);
+            $mock->expects($this->never())->method('testMockObjectsIsolation');
+        });
+
+        $mock->testMockObjectsIsolation();
+    }
+
 //    public function testFail()
 //    {
 //        $this->specify('this will fail', function(){