diff --git a/src/makevc.env b/src/makevc.env
index 4566c9a4fd..71d8e2dca0 100644
--- a/src/makevc.env
+++ b/src/makevc.env
@@ -8,6 +8,10 @@
 #
 !include <ntwin32.mak>
 
+!if "$(RM)" == ""
+RM= erase
+!endif
+
 WXVERSION=23_0
 WIN95=1
 
@@ -227,6 +231,12 @@ $(CPPFLAGS2) /Fo$@ /c $<
 $(CPPFLAGS2) /Fo$@ /c $<
 <<
 
+#use CPPFLAGS2 so as not to use precompiled headers
+{}.c{$D}.obj:
+	cl @<<
+$(CPPFLAGS2) /Fo$@ /c $<
+<<
+
 {}.cpp{$D}.obj:
 	cl @<<
 $(CPPFLAGS) /Fo$@ /c /Tp $<