diff --git a/.travis.yml b/.travis.yml
index 506cba6..5dafcd6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,10 +8,10 @@ android:
     - android-27
 
 before_install:
-- yes | sdkmanager "platforms;android-27"
+- yes | sdkmanager "platforms;android-27" # accept android licenses
 
 install:
-- nvm install 8
+- nvm install 6 # build with nodejs 6, as this is what FDroid uses (debian stretch backports)
 - npm install -g ionic cordova
 - npm install
 
@@ -33,7 +33,7 @@ deploy:
   - provider: releases
     api_key: $GITHUB_TOKEN
     file:
-      - "sensebox_blockly_{TRAVIS_TAG}.apk"
+      - "sensebox_blockly_${TRAVIS_TAG}.apk"
     skip_cleanup: true
     on:
       tags: true