diff --git a/test/gtest-unittest-api_test.cc b/test/gtest-unittest-api_test.cc
index f53e2744..07083e51 100644
--- a/test/gtest-unittest-api_test.cc
+++ b/test/gtest-unittest-api_test.cc
@@ -37,7 +37,6 @@
 
 #include <string.h>  // For strcmp.
 #include <algorithm>
-#include <sstream>
 
 using ::testing::InitGoogleTest;