diff --git a/lib/makefile b/lib/makefile
index 6eaa3d3..b19c19c 100644
--- a/lib/makefile
+++ b/lib/makefile
@@ -11,7 +11,7 @@
 libm.lib:	$(CLIB)
 	-$(RM) libm.lib
 	$(LIBUTIL) $(CLIB) $(MATH_EXTRACT) $(LIBTERM)
-	for %i in (*.obj) do ..\utils\patchobj CODE=LCODE %i
+	$(COMSPEC) /c for %i in (*.obj) do ..\utils\patchobj CODE=LCODE %i
 	$(LIBUTIL) libm $(MATH_INSERT)     $(LIBTERM)
 	-$(RM) *.OBJ