diff --git a/lib/models/patch.dart b/lib/models/patch.dart
index 199cbb87..ebcebf59 100644
--- a/lib/models/patch.dart
+++ b/lib/models/patch.dart
@@ -73,11 +73,14 @@ class Option {
 
   static void _migrateV17ToV19(Map<String, dynamic> json) {
     if (json['valueType'] == null) {
-      json['valueType'] = json['optionClassType']
-          .replace('PatchOption', '')
-          .replace('List', 'Array');
+      final type = json['optionClassType'];
+      if (type is String) {
+        json['valueType'] = type
+            .replaceAll('PatchOption', '')
+            .replaceAll('List', 'Array');
 
-      json['optionClassType'] = null;
+        json['optionClassType'] = null;
+      }
     }
   }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 3c39c3fb..e5d5c80b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ homepage: https://github.com/revanced/revanced-manager
 
 publish_to: 'none'
 
-version: 1.14.2+101400200
+version: 1.15.1+101500100
 
 environment:
   sdk: '>=3.0.0 <4.0.0'