diff --git a/README.chromium b/README.chromium
index 4fc980308..b826c3156 100644
--- a/README.chromium
+++ b/README.chromium
@@ -1,6 +1,6 @@
 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 683
+Version: 684
 License: BSD
 License File: LICENSE
 
diff --git a/include/libyuv/version.h b/include/libyuv/version.h
index 74545dbcf..eba9810c3 100644
--- a/include/libyuv/version.h
+++ b/include/libyuv/version.h
@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 683
+#define LIBYUV_VERSION 684
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT
diff --git a/util/ssim.cc b/util/ssim.cc
index f2aca02fd..277561dd0 100644
--- a/util/ssim.cc
+++ b/util/ssim.cc
@@ -20,7 +20,7 @@ extern "C" {
 typedef unsigned int uint32;     // NOLINT
 typedef unsigned short uint16;   // NOLINT
 
-#if !defined(LIBYUV_DISABLE_X86) && \
+#if !defined(LIBYUV_DISABLE_X86) && !defined(__SSE2__) && \
   (defined(_M_X64) || (defined(_M_IX86_FP) && (_M_IX86_FP >= 2)))
 #define __SSE2__
 #endif