diff --git a/__pycache__/app.cpython-37.pyc b/__pycache__/app.cpython-37.pyc
index d78afc5..bbd4c09 100644
Binary files a/__pycache__/app.cpython-37.pyc and b/__pycache__/app.cpython-37.pyc differ
diff --git a/app.py b/app.py
index 4323a45..31de38d 100644
--- a/app.py
+++ b/app.py
@@ -1,5 +1,6 @@
 from flask import Flask, render_template, request, redirect
 from sympy import *
+from helpers import apology
 
 app = Flask(__name__)