diff --git a/wp-app.php b/wp-app.php
index 35fff3a27..26b8a96e2 100644
--- a/wp-app.php
+++ b/wp-app.php
@@ -197,7 +197,7 @@ class AtomServer {
 
 		// check to see if AtomPub is enabled
 		if( !get_option( 'enable_app' ) )
-			$this->not_allowed( 'AtomPub services are disabled on this blog.  An admin user can enable them at ' . admin_url('options-writing.php') );
+			$this->not_allowed( sprintf( __( 'AtomPub services are disabled on this blog.  An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
 
 		// dispatch
 		foreach($this->selectors as $regex => $funcs) {