diff --git a/Makefile b/Makefile
index 24fae29977..b84885cd14 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,6 @@ build-apps: ## Prepare apps for HAC upload.
 	$(SED) -i -r -e "s#^@app\(('|\")(.*)('|\")(.*)#@app\('/'\4#" py/tmp/tour/examples/tour.py 
 	$(SED) -i -r -e "s#^@app\(('|\")(.*)('|\")(.*)#@app\('/'\4#" py/tmp/theme-generator/theme_generator.py 
 	for app in py/tmp/*; do cd $$app && zip -r ../../../build/apps/wave-`basename $$app`/`basename $$app`-$(VERSION).wave * && cd -; done
-	rm -rf py/tmp
 	cd studio && $(MAKE) build
 	cd university && $(MAKE) build