diff --git a/build/platform-msvc-common.mk b/build/platform-msvc-common.mk
index 7ad9f7a6..c3384781 100644
--- a/build/platform-msvc-common.mk
+++ b/build/platform-msvc-common.mk
@@ -1,11 +1,11 @@
 CXX=cl
 AR=lib
 CXX_O=-Fo$@
-CFLAGS += -nologo
+CFLAGS += -nologo -W3 -EHsc -fp:precise -Zc:wchar_t -Zc:forScope
 CXX_LINK_O=-nologo -Fe$@
 AR_OPTS=-nologo -out:$@
-CFLAGS_OPT=-O2
-CFLAGS_DEBUG=
+CFLAGS_OPT=-O2 -Ob1 -Oy- -Zi -GF -Gm- -GS -Gy -MD -DNDEBUG
+CFLAGS_DEBUG=-Od -Oy- -ZI -Gm -MDd -RTC1 -D_DEBUG
 CFLAGS_M32=
 CFLAGS_M64=
 LINK_LIB=$(1).lib