diff --git a/src/makevc.env b/src/makevc.env
index fc045d5942..5f728e8f20 100644
--- a/src/makevc.env
+++ b/src/makevc.env
@@ -37,8 +37,8 @@ SRCSUFF=cpp
 WAITFLAG=/w
 
 # If you set wxUSE_IOSTREAMH to 0, remove -Dtry=__try -Dexcept=__except -Dleave=__leave -Dfinally=__finally
-#WINFLAGS=-c -W3 -DCRTAPI1=_cdecl -DCRTAPI2=_cdecl -nologo -D_X86_=1 -DWIN32 -D__WIN32__ $(WINVERSION)
-WINFLAGS=-c -W3 -nologo -DWIN32 -D__WIN32__ -D_WINDOWS $(WINVERSION)
+#WINFLAGS=-c -W3 -DCRTAPI1=_cdecl -DCRTAPI2=_cdecl -nologo -D_X86_=1 -DWIN32 -D__WIN32__ $(WINVERSION) -DSTRICT
+WINFLAGS=-c -W3 -nologo -DWIN32 -D__WIN32__ -D_WINDOWS $(WINVERSION) -DSTRICT
 WINLINKFLAGS=/INCREMENTAL:NO /NOLOGO -machine:$(CPU) -subsystem:windows,$(APPVER)
 BASELINKFLAGS=/INCREMENTAL:NO /NOLOGO -machine:$(CPU) -subsystem:console,$(APPVER)
 WINLIBS=kernel32.lib user32.lib gdi32.lib comdlg32.lib winspool.lib winmm.lib shell32.lib oldnames.lib\