diff --git a/board/build.mk b/board/build.mk
index 534d423390b..1be10983a6d 100644
--- a/board/build.mk
+++ b/board/build.mk
@@ -35,6 +35,7 @@ POSTCOMPILE = @mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d && touch $@
 # this no longer pushes the bootstub
 flash: obj/$(PROJ_NAME).bin
 	PYTHONPATH=../ python3 -c "from python import Panda; Panda().flash('obj/$(PROJ_NAME).bin')"
+	PYTHONPATH=../ python3 -c "from python import Panda; print('flash succeeded') if Panda().get_signature() == Panda().get_signature_from_firmware('obj/$(PROJ_NAME).bin') else print('flash failed')"
 
 ota: obj/$(PROJ_NAME).bin
 	curl http://192.168.0.10/stupdate --upload-file $<