diff --git a/CMakeLists.txt b/CMakeLists.txt
index 85c58eb29..a103dace0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -218,9 +218,9 @@ string (JOIN " " COMMON_WARNING_MSVC "/W4" "/analyze" "/WX"
     #"/we6340" # Mismatch on sign: 'unsigned __int64' passed as _Param_(4) when some signed type is required in call to 'ssl_log'.
 )
 
-set (CC_WARNING_GNU "-Wno-unused-parameter -Wstrict-prototypes -Wvla -Wsign-compare -Wwrite-strings -Wimplicit-fallthrough=3")
-set (CC_WARNING_Clang "-Wno-unused-parameter -Wstrict-prototypes -Wvla -Wsign-compare -Wwrite-strings -Wimplicit-fallthrough")
-set (CC_WARNING_MSVC "")
+set (CC_WARNING_GNU "-Wno-unused-parameter -Wstrict-prototypes -Wvla -Wsign-compare -Wwrite-strings")
+set (CC_WARNING_Clang "-Wno-unused-parameter -Wstrict-prototypes -Wvla -Wsign-compare -Wwrite-strings")
+set (CC_WARNING_MSVC "/wd4244 /wd4267 /wd4800 /wd4996 /analyze /we6328 /we6340 /we28251")
 
 set (CXX_WARNING_GNU "")
 set (CXX_WARNING_Clang "")