diff --git a/.travis.yml b/.travis.yml
index 9cddf7ab..929b0b13 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,7 @@ install:
   - sed -i 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config
 
 script:
-  - for package in $(cat sources.txt); do (echo testing $package && cd $package && tinc && cabal configure --enable-tests --disable-optimization && cabal build && cabal test) || exit 1; done
+  - ./travis.sh
 
 cache:
   directories:
diff --git a/travis.sh b/travis.sh
new file mode 100755
index 00000000..ac028050
--- /dev/null
+++ b/travis.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+for package in $(cat sources.txt) ; do
+  echo testing $package
+  pushd $package
+  tinc
+  cabal configure --enable-tests --disable-optimization
+  cabal build
+  cabal test
+  popd
+done