diff --git a/lib/main.dart b/lib/main.dart
index c16ea0b..43e6da1 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -722,7 +722,9 @@ class AddTransactionDialogState extends State<AddTransactionDialog> {
           color: Colors.black54,
         ),
       ),
-      content: Column(
+      content: Form(
+    key: _formKey, // Hier wird das _formKey dem Form-Widget zugewiesen
+    child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
           Neumorphic(
@@ -801,7 +803,7 @@ class AddTransactionDialogState extends State<AddTransactionDialog> {
             ],
           ),
         ],
-      ),
+      )),
       actions: [
         NeumorphicButton(
           onPressed: () {