diff --git a/app.py b/app.py
index 8337d77..493e3fa 100644
--- a/app.py
+++ b/app.py
@@ -389,4 +389,4 @@ def index():
         printed=printed, error=error)
 
 if __name__ == "__main__":
-    app.run(host=0.0.0.0)
+    app.run(host="0.0.0.0")