diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3ba5ea7..9470292 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -12,3 +12,6 @@ jobs:
             - run:
                 name: Lint
                 command: flake8 build.py --ignore=E128,E501
+            - run:
+                name: Test build
+                command: python3 build.py test/main.md
diff --git a/test/main.md b/test/main.md
new file mode 100644
index 0000000..730f4a3
--- /dev/null
+++ b/test/main.md
@@ -0,0 +1,3 @@
+# Hello world
+
+\lipsum[3-56]