--- a/Make.proto	Fri Jul 19 11:09:39 2019 +0100
+++ b/Make.proto	Tue Jan 14 22:47:55 2020 +0000
@@ -357,12 +357,12 @@
 	    @-rm -f modulList.stc modulList.c modulList.o
 	    @-rm -rf resources source bitmaps include examples lib
 	    @-rm -f stx st.img st.img.sav st.sav
-	    @-rm -f main.o
+	    @-rm -f $(OUTDIR)main.o
 	    @-rm -rf modules
 	    @-rm -rf package
 	    @-rm -rf stxtmp_*
 
-main.o::    $(INCLUDE)/stc.h $(INCLUDE)/stcIntern.h Make.proto
+$(OUTDIR)main.o::    $(INCLUDE)/stc.h $(INCLUDE)/stcIntern.h Make.proto
 
 installProgsIf:: $(INSTALLBIN_DIR)
 	@-echo "installing smalltalk..."