diff --git a/src/gtest-port.cc b/src/gtest-port.cc
index ae0c663d..da62fbab 100644
--- a/src/gtest-port.cc
+++ b/src/gtest-port.cc
@@ -53,6 +53,7 @@
 
 #include "gtest/gtest-spi.h"
 #include "gtest/gtest-message.h"
+#include "gtest/internal/gtest-internal.h"
 #include "gtest/internal/gtest-string.h"
 
 // Indicates that this translation unit is part of Google Test's