diff --git a/src/main.rs b/src/main.rs
index 392ff2c..d2f296a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -26,6 +26,8 @@ extern crate serde_json;
 extern crate serde_yaml;
 extern crate serde;
 
+mod common;
+
 /**
  * Main struct for command-line arguments.
  */