diff --git a/googletest/samples/sample2_unittest.cc b/googletest/samples/sample2_unittest.cc
index 4fa19b7..0848826 100644
--- a/googletest/samples/sample2_unittest.cc
+++ b/googletest/samples/sample2_unittest.cc
@@ -28,9 +28,6 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // A sample program demonstrating using Google C++ testing framework.
-//
-// Author: wan@google.com (Zhanyong Wan)
-
 
 // This sample shows how to write a more complex unit test for a class
 // that has multiple member functions.
@@ -42,7 +39,7 @@
 
 #include "sample2.h"
 #include "gtest/gtest.h"
-
+namespace {
 // In this example, we test the MyString class (a simple string).
 
 // Tests the default c'tor.
@@ -107,3 +104,4 @@
   s.Set(NULL);
   EXPECT_STREQ(NULL, s.c_string());
 }
+}  // namespace