diff --git a/image/usr/local/lib/web/backend/run.py b/image/usr/local/lib/web/backend/run.py
index a9b29a9..471a19c 100755
--- a/image/usr/local/lib/web/backend/run.py
+++ b/image/usr/local/lib/web/backend/run.py
@@ -115,8 +115,6 @@ def main():
     logging.getLogger("werkzeug").setLevel(logging.WARNING)
     log = logging.getLogger('novnc2')
 
-    app.config["APPLICATION_ROOT"] = os.getenv("PREFIX_PATH")
-
     entrypoint()
 
 
diff --git a/web/config/dev.env.js b/web/config/dev.env.js
index 58376c3..961ded7 100644
--- a/web/config/dev.env.js
+++ b/web/config/dev.env.js
@@ -4,5 +4,5 @@ const prodEnv = require('./prod.env')
 
 module.exports = merge(prodEnv, {
   NODE_ENV: '"development"',
-  PREFIX_PATH: '"/app"'
+  PREFIX_PATH: `"${process.env.PREFIX_PATH}"`
 })
diff --git a/web/config/prod.env.js b/web/config/prod.env.js
index e865d72..1dea103 100644
--- a/web/config/prod.env.js
+++ b/web/config/prod.env.js
@@ -1,5 +1,5 @@
 'use strict'
 module.exports = {
   NODE_ENV: '"production"',
-  PREFIX_PATH: '"/app"'
+  PREFIX_PATH: `"${process.env.PREFIX_PATH}"`
 }