diff --git a/googletest/samples/sample10_unittest.cc b/googletest/samples/sample10_unittest.cc
index 977e5ff6..10aa7620 100644
--- a/googletest/samples/sample10_unittest.cc
+++ b/googletest/samples/sample10_unittest.cc
@@ -38,7 +38,6 @@
 using ::testing::EmptyTestEventListener;
 using ::testing::InitGoogleTest;
 using ::testing::Test;
-using ::testing::TestCase;
 using ::testing::TestEventListeners;
 using ::testing::TestInfo;
 using ::testing::TestPartResult;