diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc92f30bc..9257a210b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -800,14 +800,11 @@ IF(CMAKE_COMPILER_IS_GNUCXX)
 
 
 ELSEIF(MSVC)
-        # FIXME: What are good aggressive warning flags for Visual Studio?
-        # And do we need to further subcase this for different versions of VS?
-        # CMake variables: MSVC60, MSVC70, MSVC71, MSVC80, CMAKE_COMPILER_2005
+        #disable specific warning level 4 warnings:
+        #C4100 'identifier' : unreferenced formal parameter
+        #C4127 Error Message conditional expression is constant
+        #C4706 assignment within conditional expression
         SET(OSG_AGGRESSIVE_WARNING_FLAGS /W4 /wd4706 /wd4127 /wd4100)
-        IF(MSVC11)
-            SET(OSG_AGGRESSIVE_WARNING_FLAGS ${OSG_AGGRESSIVE_WARNING_FLAGS} /wd4250)
-        ENDIF()
-
 ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
         SET(OSG_AGGRESSIVE_WARNING_FLAGS  -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused -Wno-overloaded-virtual)