diff --git a/test.cfg b/test.cfg
index 499492e..9082812 100644
--- a/test.cfg
+++ b/test.cfg
@@ -12,6 +12,7 @@ primary {
   # Primary-sub stuff
   sub {
       key = "primary sub key value";
+      include "test_include.cfg";
   }
 }
 
diff --git a/test_include.cfg b/test_include.cfg
new file mode 100644
index 0000000..2e54a46
--- /dev/null
+++ b/test_include.cfg
@@ -0,0 +1 @@
+included_setting = "primary sub included_setting value";