diff --git a/lib/pangea/practice_activities/activity_type_enum.dart b/lib/pangea/practice_activities/activity_type_enum.dart
index 51e8ae106..2fe80c418 100644
--- a/lib/pangea/practice_activities/activity_type_enum.dart
+++ b/lib/pangea/practice_activities/activity_type_enum.dart
@@ -15,25 +15,6 @@ enum ActivityTypeEnum {
 }
 
 extension ActivityTypeExtension on ActivityTypeEnum {
-  String get string {
-    switch (this) {
-      case ActivityTypeEnum.wordMeaning:
-        return 'word_meaning';
-      case ActivityTypeEnum.wordFocusListening:
-        return 'word_focus_listening';
-      case ActivityTypeEnum.hiddenWordListening:
-        return 'hidden_word_listening';
-      case ActivityTypeEnum.lemmaId:
-        return 'lemma_id';
-      case ActivityTypeEnum.emoji:
-        return 'emoji';
-      case ActivityTypeEnum.morphId:
-        return 'morph_id';
-      case ActivityTypeEnum.messageMeaning:
-        return 'message_meaning'; // TODO: Add to L10n
-    }
-  }
-
   bool get hiddenType {
     switch (this) {
       case ActivityTypeEnum.wordMeaning:
diff --git a/lib/pangea/practice_activities/message_activity_request.dart b/lib/pangea/practice_activities/message_activity_request.dart
index 78907d196..f3427514e 100644
--- a/lib/pangea/practice_activities/message_activity_request.dart
+++ b/lib/pangea/practice_activities/message_activity_request.dart
@@ -83,7 +83,7 @@ class MessageActivityRequest {
       'message_tokens': messageTokens.map((e) => e.toJson()).toList(),
       'activity_quality_feedback': activityQualityFeedback?.toJson(),
       'target_tokens': targetTokens.map((e) => e.toJson()).toList(),
-      'target_type': targetType.string,
+      'target_type': targetType.name,
       'target_morph_feature': targetMorphFeature,
     };
   }
diff --git a/lib/pangea/practice_activities/practice_activity_model.dart b/lib/pangea/practice_activities/practice_activity_model.dart
index 5dee155aa..68a0ce6b0 100644
--- a/lib/pangea/practice_activities/practice_activity_model.dart
+++ b/lib/pangea/practice_activities/practice_activity_model.dart
@@ -326,7 +326,7 @@ class PracticeActivityModel {
   Map<String, dynamic> toJson() {
     return {
       'lang_code': langCode,
-      'activity_type': activityType.string,
+      'activity_type': activityType.name,
       'content': multipleChoiceContent?.toJson(),
       'target_tokens': targetTokens.map((e) => e.toJson()).toList(),
       'match_content': matchContent?.toJson(),
diff --git a/lib/pangea/practice_activities/practice_target.dart b/lib/pangea/practice_activities/practice_target.dart
index df034d20b..fbb711f2a 100644
--- a/lib/pangea/practice_activities/practice_target.dart
+++ b/lib/pangea/practice_activities/practice_target.dart
@@ -2,6 +2,8 @@ import 'dart:developer';
 
 import 'package:flutter/foundation.dart';
 
+import 'package:collection/collection.dart';
+
 import 'package:fluffychat/pangea/common/utils/error_handler.dart';
 import 'package:fluffychat/pangea/constructs/construct_identifier.dart';
 import 'package:fluffychat/pangea/events/models/pangea_token_model.dart';
@@ -60,13 +62,22 @@ class PracticeTarget {
       userL2.hashCode;
 
   static PracticeTarget fromJson(Map<String, dynamic> json) {
+    final type = ActivityTypeEnum.values.firstWhereOrNull(
+      (v) => json['activityType'] == v.name,
+    );
+    if (type == null) {
+      throw Exception(
+        "ActivityTypeEnum ${json['activityType']} not found in enum",
+      );
+    }
+
     return PracticeTarget(
       tokens:
           (json['tokens'] as List).map((e) => PangeaToken.fromJson(e)).toList(),
-      activityType: ActivityTypeEnum.values[json['activityType']],
+      activityType: type,
       morphFeature: json['morphFeature'] == null
           ? null
-          : MorphFeaturesEnum.values[json['morphFeature']],
+          : MorphFeaturesEnumExtension.fromString(json['morphFeature']),
       userL2: json['userL2'],
     );
   }
@@ -83,7 +94,7 @@ class PracticeTarget {
   //unique condensed deterministic key for local storage
   String get storageKey {
     return tokens.map((e) => e.text.content).join() +
-        activityType.string +
+        activityType.name +
         (morphFeature?.name ?? "");
   }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 7ca3398e2..b8b738d3d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,7 +6,7 @@ description: Learn a language while texting your friends.
 # Pangea#
 publish_to: none
 # On version bump also increase the build number for F-Droid
-version: 4.1.10+1
+version: 4.1.10+2
 
 environment:
   sdk: ">=3.0.0 <4.0.0"