diff --git a/eo/CMakeLists.txt b/eo/CMakeLists.txt
index a825730c2..e9eaf9c87 100644
--- a/eo/CMakeLists.txt
+++ b/eo/CMakeLists.txt
@@ -78,7 +78,7 @@ IF(WIN32 AND NOT CYGWIN)
      IF(CMAKE_GENERATOR STREQUAL "Visual Studio 8 2005" OR CMAKE_GENERATOR STREQUAL "Visual Studio 9 2008")
        SET(CMAKE_CXX_FLAGS "/nologo /W3 /Gy")
        SET(CMAKE_CXX_FLAGS_DEBUG "/MTd /Z7 /Od")
-       SET(CMAKE_CXX_FLAGS_RELEASE "/MT /O2")
+       SET(CMAKE_CXX_FLAGS_RELEASE "/w /MT /O2")
        SET(CMAKE_CXX_FLAGS_MINSIZEREL "/MT /O2")
        SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/MTd /Z7 /Od")
        SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SUBSYSTEM:CONSOLE")