diff --git a/.travis.yml b/.travis.yml
index 335da2e..fde6e0b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,7 +28,7 @@ before_install:
   fi
 - cd cookbook && ./setup.sh && cd ..
 script:
-- make travis
+- make clean && make travis
 notifications:
   email: false
   webhooks: http://37.139.9.28:54863/travis
diff --git a/Makefile b/Makefile
index 5cc5260..db14fbf 100644
--- a/Makefile
+++ b/Makefile
@@ -47,11 +47,12 @@ include mk/disk.mk
 
 # Travis target
 travis: FORCE
-	make clean
 	INSTALLER_FLAGS= make build/harddrive.bin.gz build/livedisk.iso
+	rm -rf build/travis
 	mkdir build/travis
 	mv build/harddrive.bin.gz build/travis/redox_$(TRAVIS_TAG).bin.gz
 	mv build/livedisk.iso build/travis/redox_$(TRAVIS_TAG).iso
+	cd build/travis && sha256sum -b redox_$(TRAVIS_TAG).bin.gz redox_$(TRAVIS_TAG).iso > SHA256SUM
 
 # An empty target
 FORCE: