diff --git a/Makefile.nt b/Makefile.nt
index 3f8286096..74dd17a7b 100644
--- a/Makefile.nt
+++ b/Makefile.nt
@@ -685,13 +685,13 @@ clean::
 .SUFFIXES: .ml .mli .cmo .cmi .cmx
 
 .ml.cmo:
-	$(CAMLC) $(COMPFLAGS) `./Compflags $@` -c $<
+	$(CAMLC) $(COMPFLAGS) -c $<
 
 .mli.cmi:
-	$(CAMLC) $(COMPFLAGS) `./Compflags $@` -c $<
+	$(CAMLC) $(COMPFLAGS) -c $<
 
 .ml.cmx:
-	$(CAMLOPT) $(COMPFLAGS) `./Compflags $@` -c $<
+	$(CAMLOPT) $(COMPFLAGS) -c $<
 
 partialclean::
 	rm -f utils/*.cm* utils/*.$(O) utils/*.$(S)
@@ -699,6 +699,9 @@ partialclean::
 	rm -f typing/*.cm* typing/*.$(O) typing/*.$(S)
 	rm -f bytecomp/*.cm* bytecomp/*.$(O) bytecomp/*.$(S)
 	rm -f asmcomp/*.cm* asmcomp/*.$(O) asmcomp/*.$(S)
+	rm -f middle_end/*.cm* middle_end/*.$(O) middle_end/*.$(S)
+	rm -f middle_end/base_types/*.cm* middle_end/base_types/*.$(O) \
+	      middle_end/base_types/*.$(S)
 	rm -f driver/*.cm* driver/*.$(O) driver/*.$(S)
 	rm -f toplevel/*.cm* toplevel/*.$(O) toplevel/*.$(S)
 	rm -f tools/*.cm* tools/*.$(O) tools/*.$(S)