diff --git a/security/sandbox/chromium/base/location.cc b/security/sandbox/chromium/base/location.cc
index b5da027ee821..6d7a565604cb 100644
--- a/security/sandbox/chromium/base/location.cc
+++ b/security/sandbox/chromium/base/location.cc
@@ -5,10 +5,7 @@
 #include "build/build_config.h"
 
 #if defined(COMPILER_MSVC)
-// MSDN says to #include <intrin.h>, but that breaks the VS2005 build.
-extern "C" {
-  void* _ReturnAddress();
-}
+#include <intrin.h>
 #endif
 
 #include "base/location.h"
diff --git a/security/sandbox/chromium/base/win/scoped_handle.h b/security/sandbox/chromium/base/win/scoped_handle.h
index d236a70beb42..212401496067 100644
--- a/security/sandbox/chromium/base/win/scoped_handle.h
+++ b/security/sandbox/chromium/base/win/scoped_handle.h
@@ -18,10 +18,7 @@ namespace win {
 
 // TODO(rvargas): remove this with the rest of the verifier.
 #if defined(COMPILER_MSVC)
-// MSDN says to #include <intrin.h>, but that breaks the VS2005 build.
-extern "C" {
-  void* _ReturnAddress();
-}
+#include <intrin.h>
 #define BASE_WIN_GET_CALLER _ReturnAddress()
 #elif defined(COMPILER_GCC)
 #define BASE_WIN_GET_CALLER __builtin_extract_return_addr(\\