diff --git a/accountant/api/views/operations.py b/accountant/api/views/operations.py
index 591af10..196a22e 100644
--- a/accountant/api/views/operations.py
+++ b/accountant/api/views/operations.py
@@ -91,11 +91,11 @@ class OperationListResource(Resource):
 class OperationResource(Resource):
     @requires_auth
     @marshal_with_field(Object(resource_fields))
-    def get(self, operation_id):
+    def get(self, id):
         """
         Get operation.
         """
-        operation = db.session.query(Operation).get(operation_id)
+        operation = db.session.query(Operation).get(id)
 
         if not operation:
             return None, 404
@@ -104,13 +104,13 @@ class OperationResource(Resource):
 
     @requires_auth
     @marshal_with_field(Object(resource_fields))
-    def post(self, operation_id):
+    def post(self, id):
         kwargs = parser.parse_args()
 
         assert (id not in kwargs or kwargs.id is None
-                or kwargs.id == operation_id)
+                or kwargs.id == id)
 
-        operation = db.session.query(Operation).get(operation_id)
+        operation = db.session.query(Operation).get(id)
 
         if not operation:
             return None, 404
@@ -125,8 +125,8 @@ class OperationResource(Resource):
 
     @requires_auth
     @marshal_with_field(Object(resource_fields))
-    def delete(self, operation_id):
-        operation = db.session.query(Operation).get(operation_id)
+    def delete(self, id):
+        operation = db.session.query(Operation).get(id)
 
         if not operation:
             return None, 404
@@ -137,4 +137,4 @@ class OperationResource(Resource):
 
 
 api_api.add_resource(OperationListResource, "/operations")
-api_api.add_resource(OperationResource, "/operations/<int:operation_id>")
+api_api.add_resource(OperationResource, "/operations/<int:id>")