diff --git a/app.py b/app.py
index 430adf41..5eb0d0da 100644
--- a/app.py
+++ b/app.py
@@ -6,7 +6,7 @@
 from flask import Flask, send_from_directory
 
 DIR = os.path.dirname(os.path.realpath(__file__))
-ROOT = os.path.join(DIR, 'docs', 'build', 'html')
+ROOT = os.path.join(DIR, 'docs', '_build', 'html')
 
 app = Flask(__name__)