diff --git a/litex/soc/software/bios/Makefile b/litex/soc/software/bios/Makefile
index e792ff633..0369522e6 100755
--- a/litex/soc/software/bios/Makefile
+++ b/litex/soc/software/bios/Makefile
@@ -88,7 +88,6 @@ endif
 	$(assemble)
 
 boot-helper.o: $(CPU_DIRECTORY)/boot-helper.S
-	cp $(CPU_DIRECTORY)/boot-helper.S $(BIOS_DIRECTORY)/boot-helper.S
 	$(assemble)
 
 clean:
diff --git a/litex/soc/software/libbase/Makefile b/litex/soc/software/libbase/Makefile
index e81a5316e..13680ad0e 100755
--- a/litex/soc/software/libbase/Makefile
+++ b/litex/soc/software/libbase/Makefile
@@ -25,11 +25,9 @@ vsnprintf-nofloat.o: $(LIBBASE_DIRECTORY)/vsnprintf.c
 	$(assemble)
 
 crt0-ctr.o: $(CPU_DIRECTORY)/crt0.S
-	cp $(CPU_DIRECTORY)/crt0.S $(LIBBASE_DIRECTORY)/crt0-crt.S
 	$(assemble)
 
 crt0-xip.o: $(CPU_DIRECTORY)/crt0.S
-	cp $(CPU_DIRECTORY)/crt0.S $(LIBBASE_DIRECTORY)/crt0-xip.S
 	$(CC) -c -DEXECUTE_IN_PLACE $(CFLAGS) -o $@ $<
 
 .PHONY: all clean