--- a/config/rules.mk
+++ b/config/rules.mk
@@ -554,26 +554,26 @@ endef
 #
 $(PROGRAM): $(PROGOBJS) $(STATIC_LIBS_DEPS) $(EXTRA_DEPS) $(RESFILE) $(GLOBAL_DEPS) $(call mkdir_deps,$(FINAL_TARGET))
 	$(REPORT_BUILD)
 	@$(RM) $@.manifest
 ifeq (_WINNT,$(GNU_CC)_$(OS_ARCH))
 	$(EXPAND_LINK) -NOLOGO -OUT:$@ -PDB:$(LINK_PDBFILE) -IMPLIB:$(basename $(@F)).lib $(WIN32_EXE_LDFLAGS) $(LDFLAGS) $(MOZ_PROGRAM_LDFLAGS) $(PROGOBJS) $(RESFILE) $(STATIC_LIBS) $(SHARED_LIBS) $(OS_LIBS)
 ifdef MSMANIFEST_TOOL
 	@if test -f $@.manifest; then \
-		if test -f '$(srcdir)/$@.manifest'; then \
-			echo 'Embedding manifest from $(srcdir)/$@.manifest and $@.manifest'; \
-			$(MT) -NOLOGO -MANIFEST '$(win_srcdir)/$@.manifest' $@.manifest -OUTPUTRESOURCE:$@\;1; \
+		if test -f '$(srcdir)/$(notdir $@).manifest'; then \
+			echo 'Embedding manifest from $(srcdir)/$(notdir $@).manifest and $@.manifest'; \
+			$(MT) -NOLOGO -MANIFEST '$(win_srcdir)/$(notdir $@).manifest' $@.manifest -OUTPUTRESOURCE:$@\;1; \
 		else \
 			echo 'Embedding manifest from $@.manifest'; \
 			$(MT) -NOLOGO -MANIFEST $@.manifest -OUTPUTRESOURCE:$@\;1; \
 		fi; \
-	elif test -f '$(srcdir)/$@.manifest'; then \
-		echo 'Embedding manifest from $(srcdir)/$@.manifest'; \
-		$(MT) -NOLOGO -MANIFEST '$(win_srcdir)/$@.manifest' -OUTPUTRESOURCE:$@\;1; \
+	elif test -f '$(srcdir)/$(notdir $@).manifest'; then \
+		echo 'Embedding manifest from $(srcdir)/$(notdir $@).manifest'; \
+		$(MT) -NOLOGO -MANIFEST '$(win_srcdir)/$(notdir $@).manifest' -OUTPUTRESOURCE:$@\;1; \
 	fi
 endif	# MSVC with manifest tool
 ifdef MOZ_PROFILE_GENERATE
 # touch it a few seconds into the future to work around FAT's
 # 2-second granularity
 	touch -t `date +%Y%m%d%H%M.%S -d 'now+5seconds'` pgo.relink
 endif
 else # !WINNT || GNU_CC