diff --git a/.changeset/lovely-squids-cross.md b/.changeset/lovely-squids-cross.md
new file mode 100644
index 0000000000..055ac2293e
--- /dev/null
+++ b/.changeset/lovely-squids-cross.md
@@ -0,0 +1,5 @@
+---
+'@commercetools-frontend/mc-html-template': patch
+---
+
+Ensure injected application environment script is rendered as one liner (to match the CSP hash)
diff --git a/packages/mc-html-template/html-docs/application.html b/packages/mc-html-template/html-docs/application.html
index ed2857c8db..139c8da5b2 100644
--- a/packages/mc-html-template/html-docs/application.html
+++ b/packages/mc-html-template/html-docs/application.html
@@ -166,9 +166,7 @@
     __LOADING_SCREEN_JS__
 
     <!-- Application globals -->
-    <script>
-      window.app = __APPLICATION_ENVIRONMENT__;
-    </script>
+    __APPLICATION_ENVIRONMENT__
 
     <!-- Main application chunks -->
     __APPLICATION_SCRIPT_IMPORTS__
diff --git a/packages/mc-html-template/src/replace-html-placeholders.ts b/packages/mc-html-template/src/replace-html-placeholders.ts
index db9773b474..786498e742 100644
--- a/packages/mc-html-template/src/replace-html-placeholders.ts
+++ b/packages/mc-html-template/src/replace-html-placeholders.ts
@@ -34,7 +34,7 @@ const replaceHtmlPlaceholders = (
     )
     .replace(
       new RegExp('__APPLICATION_ENVIRONMENT__', 'g'),
-      sanitizeAppEnvironment(options.env)
+      `<script>window.app = ${sanitizeAppEnvironment(options.env)};</script>`
     )
     .replace(
       new RegExp('__LOADING_SCREEN_JS__', 'g'),