diff --git a/circle.yml b/circle.yml
index eb99db8..be33e7e 100644
--- a/circle.yml
+++ b/circle.yml
@@ -19,3 +19,4 @@ test:
     - flake8 md_pdf/ --ignore=E128,E501
     - safety check
     - bandit -r md_pdf/
+    - cd test-files && mdp -vvv
diff --git a/scripts/before_script.sh b/scripts/before_script.sh
index 961302b..6c08cfa 100644
--- a/scripts/before_script.sh
+++ b/scripts/before_script.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 sudo apt-get install -y openssl build-essential xorg libssl-dev
 wget http://download.gna.org/wkhtmltopdf/0.12/0.12.3/wkhtmltox-0.12.3_linux-generic-amd64.tar.xz
 tar -xJf wkhtmltox-0.12.3_linux-generic-amd64.tar.xz