diff --git a/lib/module/src/module.rs b/lib/module/src/module.rs
index bcfa7491b2..626c34e4f5 100644
--- a/lib/module/src/module.rs
+++ b/lib/module/src/module.rs
@@ -11,6 +11,7 @@ use data_context::DataContext;
 use std::borrow::ToOwned;
 use std::collections::HashMap;
 use std::string::String;
+use std::vec::Vec;
 use Backend;
 
 /// A function identifier for use in the `Module` interface.