diff --git a/README.md b/README.md
index 510b356..77563c2 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,6 @@ git clone <repo-url>
 
 pip install -r requirements.txt
 ```
-Add `DATABASE_URL = sqlite:///local.db` in your environment variables.
-
 Go to project root folder and execute `python3 main.py`.
 
 Go to `https://localhost:5000/ to see the site
diff --git a/config.py b/config.py
index 8d094b7..d671a19 100644
--- a/config.py
+++ b/config.py
@@ -1,4 +1,7 @@
 import os
+
+basedir = os.path.abspath(os.path.dirname(__file__))
+
 class DevelopmentConfig:
     SQLALCHEMY_TRACK_MODIFICATIONS = False
-    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL')
\ No newline at end of file
+    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///' + os.path.join(basedir, 'local.db')
\ No newline at end of file