diff --git a/src/Controller/StaticContentController.php b/src/Controller/StaticContentController.php
index affe3fd3..395736d4 100644
--- a/src/Controller/StaticContentController.php
+++ b/src/Controller/StaticContentController.php
@@ -134,7 +134,8 @@ class StaticContentController extends Controller
         $row = new StaticContent();
 
         // set and save values
-        $row->setID($req->request->get('id'));
+        $id = $req->request->get('id');
+        $row->setID($id);
         $row->setContent($req->request->get('content'));
 
         // validate
@@ -143,6 +144,14 @@ class StaticContentController extends Controller
         // initialize error list
         $error_array = [];
 
+        // check for duplicate ID
+        $result = $em->getRepository(StaticContent::class)->find($id);
+        if ($result != null)
+        {
+            error_log($id);
+            $error_array['id'] = 'Duplicate ID exists.';
+        }
+
         // add errors to list
         foreach ($errors as $error) {
             $error_array[$error->getPropertyPath()] = $error->getMessage();
@@ -213,6 +222,14 @@ class StaticContentController extends Controller
         // initialize error list
         $error_array = [];
 
+        // check for duplicate ID
+        $result = $em->getRepository(StaticContent::class)->find($id);
+        if ($result != null)
+        {
+            error_log($id);
+            $error_array['id'] = 'Duplicate ID exists.';
+        }
+
         // add errors to list
         foreach ($errors as $error) {
             $error_array[$error->getPropertyPath()] = $error->getMessage();