diff --git a/lib/include.js b/lib/include.js
index 4060e55e..c459451b 100644
--- a/lib/include.js
+++ b/lib/include.js
@@ -96,10 +96,9 @@ Inclusion.include = function (objects, include, cb) {
     var relation = relations[relationName];
 
     if (!relation) {
-      return function () {
-        cb(new Error('Relation "' + relationName + '" is not defined for '
-          + self.modelName + ' model'));
-      };
+      cb(new Error('Relation "' + relationName + '" is not defined for '
+        + self.modelName + ' model'));
+      return;
     }
 
     // Calling the relation method for each object