diff --git a/src/controllers/tanksController.js b/src/controllers/tanksController.js
index 528a3902..d25c4179 100644
--- a/src/controllers/tanksController.js
+++ b/src/controllers/tanksController.js
@@ -524,6 +524,7 @@ exports.calculateCapacity = async (req, reply) => {
 
 }
 
+
 if(shape==="horizontalellipse"){
   const { length, width, height } = req.body
 
@@ -544,6 +545,16 @@ if(shape==="horizontalellipse"){
   return { message: 'success' };
 
 }
+if(shape==="userdefined"){
+  const capacity = req.body
+
+  reply.send({ status_code: 200, capacity: capacity});
+
+
+  return { message: 'success' };
+
+}
+
 
     }