--- a/accessible/public/ia2/Makefile.in
+++ b/accessible/public/ia2/Makefile.in
@@ -94,18 +94,16 @@ CSRCS	= \
 MIDL_GENERATED_FILES = \
   dlldata.c \
   $(MIDL_INTERFACES:%.idl=%_p.c) \
   $(MIDL_INTERFACES:%.idl=%_i.c) \
   $(MIDL_INTERFACES:%.idl=%.h) \
   $(MIDL_ENUMS:%.idl=%.h) \
   $(NULL)
 
-EMBED_MANIFEST_AT = 2
-
 include $(topsrcdir)/config/rules.mk
 
 OS_LIBS = \
   kernel32.lib \
   rpcndr.lib \
   rpcns4.lib \
   rpcrt4.lib \
   ole32.lib \

--- a/accessible/public/msaa/Makefile.in
+++ b/accessible/public/msaa/Makefile.in
@@ -114,12 +114,10 @@ EXPORTS = \
 	$(NULL)
 
 export:: done_gen
 
 # This marshall dll is also registered in the installer
 register::
 	regsvr32 -s $(DIST)/bin/$(SHARED_LIBRARY)
 
-EMBED_MANIFEST_AT = 2
-
 include $(topsrcdir)/config/rules.mk
 

--- a/config/rules.mk
+++ b/config/rules.mk
@@ -1124,22 +1124,20 @@ ifdef NO_LD_ARCHIVE_FLAGS
 ifdef SHARED_LIBRARY_LIBS
 	@rm -f $(SUB_SHLOBJS)
 	@for lib in $(SHARED_LIBRARY_LIBS); do $(AR_EXTRACT) $${lib}; $(CLEANUP2); done
 endif # SHARED_LIBRARY_LIBS
 endif # NO_LD_ARCHIVE_FLAGS
 	$(MKSHLIB) $(SHLIB_LDSTARTFILE) $(OBJS) $(LOBJS) $(SUB_SHLOBJS) $(RESFILE) $(LDFLAGS) $(EXTRA_DSO_LDOPTS) $(OS_LIBS) $(EXTRA_LIBS) $(DEF_FILE) $(SHLIB_LDENDFILE)
 ifeq (_WINNT,$(GNU_CC)_$(OS_ARCH))
 ifdef MSMANIFEST_TOOL
-ifdef EMBED_MANIFEST_AT
 	@if test -f $@.manifest; then \
-		mt.exe -NOLOGO -MANIFEST $@.manifest -OUTPUTRESOURCE:$@\;$(EMBED_MANIFEST_AT); \
+		mt.exe -NOLOGO -MANIFEST $@.manifest -OUTPUTRESOURCE:$@\;2; \
 		rm -f $@.manifest; \
 	fi
-endif   # embed manifest
 endif	# MSVC with manifest tool
 endif	# WINNT && !GCC
 	@rm -f foodummyfilefoo $(SUB_SHLOBJS) $(DELETE_AFTER_LINK)
 else # os2 vacpp
 	$(MKSHLIB) -O:$@ -DLL -INC:_dllentry $(LDFLAGS) $(OBJS) $(LOBJS) $(EXTRA_DSO_LDOPTS) $(OS_LIBS) $(EXTRA_LIBS) $(DEF_FILE)
 endif # !os2 vacpp
 	chmod +x $@
 ifndef NO_COMPONENT_LINK_MAP

--- a/embedding/browser/activex/src/control/Makefile.in
+++ b/embedding/browser/activex/src/control/Makefile.in
@@ -109,18 +109,16 @@ OS_LIBS	+= \
 	shell32.lib \
 	$(NULL)
 
 MIDL_GENERATED_FILES = MozillaControl_i.c MozillaControl.h
 GARBAGE	+= $(DEFFILE) $(MIDL_GENERATED_FILES) done_gen
 
 ENABLE_CXX_EXCEPTIONS = 1
 
-EMBED_MANIFEST_AT = 2
-
 include $(topsrcdir)/config/rules.mk
 
 CXXFLAGS += -D "WIN32" -U "ClientWallet"
 LDFLAGS += -SUBSYSTEM:windows -DLL
 
 ifdef MOZ_NO_DEBUG_RTL
 DEFINES	+= -DMOZ_NO_DEBUG_RTL
 endif

--- a/embedding/browser/activex/src/control_kicker/Makefile.in
+++ b/embedding/browser/activex/src/control_kicker/Makefile.in
@@ -59,18 +59,16 @@ OS_LIBS	+= \
 	ole32.lib \
 	oleaut32.lib \
 	uuid.lib \
 	shell32.lib \
 	$(NULL)
 	
 ENABLE_CXX_EXCEPTIONS = 1
 
-EMBED_MANIFEST_AT = 2
-
 include $(topsrcdir)/config/rules.mk
 
 CXXFLAGS += -D "WIN32" -GF -MT -O1
 
 libs::
 ifdef MOZ_ACTIVEX_REGISTRATION
 ifneq ($(OS_TARGET),WIN98)
 	-regsvr32 -s -c $(DIST)/bin/$(SHARED_LIBRARY)

--- a/xpinstall/stub/Makefile.in
+++ b/xpinstall/stub/Makefile.in
@@ -62,10 +62,9 @@ CPPSRCS		= \
 		$(NULL)
 
 # LOCAL_INCLUDES	= -I$(srcdir)/../public
 
 EXTRA_DSO_LDOPTS= \
 		$(MOZ_COMPONENT_LIBS) \
 		$(NULL)
 
-EMBED_MANIFEST_AT = 17
 include $(topsrcdir)/config/rules.mk