diff --git a/Makefile b/Makefile
index 805b085..b170699 100755
--- a/Makefile
+++ b/Makefile
@@ -8,11 +8,11 @@ CFLAGS   = -O2 -Wunused -Wno-unused-result -D BUILDNO=$(BUILDNO)  -D_7ZIP_ST $(L
 all:    balong_flash
 
 clean: 
-	rm *.o
-	rm balong_flash
+	rm -f *.o lzma/*.o
+	rm -f balong_flash
 
 balong_flash: balong_flash.o hdlcio_linux.o ptable.o flasher.o util.o signver.o lzma/Alloc.o lzma/LzmaDec.o
 	@gcc $^ -o $@ $(LIBS) 
 	@echo Current buid: $(BUILDNO)
 	@echo $$((`cat build`+1)) >build
-	
\ No newline at end of file
+