diff --git a/gdfSetup.php b/gdfSetup.php
index e8ff0bd..62e23d0 100644
--- a/gdfSetup.php
+++ b/gdfSetup.php
@@ -177,7 +177,7 @@ WebApplication::installRequest($request, $response);
 // Setup for api calls
 $app = new class() extends ApplicationAbstract
 {
-    protected $appName = 'Api';
+    protected string $appName = 'Api';
 };
 
 $app->dbPool = new DatabasePool();
diff --git a/sdSetup.php b/sdSetup.php
index 940ecc2..ec5abe3 100644
--- a/sdSetup.php
+++ b/sdSetup.php
@@ -187,7 +187,7 @@ WebApplication::installRequest($request, $response);
 // Setup for api calls
 $app = new class() extends ApplicationAbstract
 {
-    protected $appName = 'Api';
+    protected string $appName = 'Api';
 };
 
 $app->dbPool = new DatabasePool();