diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index f810d0644..47a39df8c 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -2144,7 +2144,7 @@ GTEST_DISABLE_MSC_DEPRECATED_POP_()
 #ifdef GTEST_OS_WINDOWS_MOBILE
 // Windows CE has no C library. The abort() function is used in
 // several places in Google Test. This implementation provides a reasonable
-// imitation of standard behaviour.
+// imitation of standard behavior.
 [[noreturn]] void Abort();
 #else
 [[noreturn]] inline void Abort() { abort(); }
diff --git a/googletest/include/gtest/internal/gtest-string.h b/googletest/include/gtest/internal/gtest-string.h
index 7c05b5833..98ce2694c 100644
--- a/googletest/include/gtest/internal/gtest-string.h
+++ b/googletest/include/gtest/internal/gtest-string.h
@@ -84,7 +84,7 @@ class GTEST_API_ String {
   // input is NULL.
   //
   // The wide string is created using the ANSI codepage (CP_ACP) to
-  // match the behaviour of the ANSI versions of Win32 calls and the
+  // match the behavior of the ANSI versions of Win32 calls and the
   // C runtime.
   static LPCWSTR AnsiToUtf16(const char* c_str);
 
@@ -94,7 +94,7 @@ class GTEST_API_ String {
   // input is NULL.
   //
   // The returned string is created using the ANSI codepage (CP_ACP) to
-  // match the behaviour of the ANSI versions of Win32 calls and the
+  // match the behavior of the ANSI versions of Win32 calls and the
   // C runtime.
   static const char* Utf16ToAnsi(LPCWSTR utf16_str);
 #endif