diff --git a/Documentation/ApiOverview/ContentSecurityPolicy/Index.rst b/Documentation/ApiOverview/ContentSecurityPolicy/Index.rst
index 6c1f105f36..a66f240304 100644
--- a/Documentation/ApiOverview/ContentSecurityPolicy/Index.rst
+++ b/Documentation/ApiOverview/ContentSecurityPolicy/Index.rst
@@ -304,7 +304,7 @@ The following modes are available:
 
         ..  code-block:: http
 
-            Content-Security-Policy: img-src 'self'
+            Content-Security-Policy: default-src 'self'
 
     ..  confval:: set
         :name: content-security-policy-mode-set