diff --git a/proto/device_sync/consent_backup.proto b/proto/device_sync/consent_backup.proto
index c2824b0..b8e5b23 100644
--- a/proto/device_sync/consent_backup.proto
+++ b/proto/device_sync/consent_backup.proto
@@ -10,14 +10,16 @@ message ConsentSave {
 
 // Consent record type
 enum ConsentTypeSave {
-  CONSENT_TYPE_SAVE_CONVERSATION_ID = 0;
-  CONSENT_TYPE_SAVE_INBOX_ID = 1;
-  CONSENT_TYPE_SAVE_ADDRESS = 2;
+  CONSENT_TYPE_SAVE_UNSPECIFIED = 0;
+  CONSENT_TYPE_SAVE_CONVERSATION_ID = 1;
+  CONSENT_TYPE_SAVE_INBOX_ID = 2;
+  CONSENT_TYPE_SAVE_ADDRESS = 3;
 }
 
 // Consent record state
 enum ConsentStateSave {
-  CONSENT_STATE_SAVE_UNKNOWN = 0;
-  CONSENT_STATE_SAVE_ALLOWED = 1;
-  CONSENT_STATE_SAVE_DENIED = 2;
+  CONSENt_STATE_SAVE_UNSPECIFIED = 0;
+  CONSENT_STATE_SAVE_UNKNOWN = 1;
+  CONSENT_STATE_SAVE_ALLOWED = 2;
+  CONSENT_STATE_SAVE_DENIED = 3;
 }
diff --git a/proto/device_sync/device_sync.proto b/proto/device_sync/device_sync.proto
index 892c4d2..9ae54d3 100644
--- a/proto/device_sync/device_sync.proto
+++ b/proto/device_sync/device_sync.proto
@@ -26,6 +26,7 @@ message BackupMetadataSave {
 
 // Elements selected for backup
 enum BackupElementSelection {
-  BACKUP_ELEMENT_SELECTION_MESSAGES = 0;
-  BACKUP_ELEMENT_SELECTION_CONSENT = 1;
+  BACKUP_ELEMENT_SELECTION_UNSPECIFIED = 0;
+  BACKUP_ELEMENT_SELECTION_MESSAGES = 1;
+  BACKUP_ELEMENT_SELECTION_CONSENT = 2;
 }
diff --git a/proto/device_sync/message_backup.proto b/proto/device_sync/message_backup.proto
index 6d290dd..d8d834c 100644
--- a/proto/device_sync/message_backup.proto
+++ b/proto/device_sync/message_backup.proto
@@ -20,27 +20,30 @@ message GroupMessageSave {
 
 // Group message kind
 enum GroupMessageKindSave {
-  GROUP_MESSAGE_KIND_SAVE_APPLICATION = 0;
-  GROUP_MESSAGE_KIND_SAVE_MEMBERSHIP_CHANGE = 1;
+  GROUP_MESSAGE_KIND_SAVE_UNSPECIFIED = 0;
+  GROUP_MESSAGE_KIND_SAVE_APPLICATION = 1;
+  GROUP_MESSAGE_KIND_SAVE_MEMBERSHIP_CHANGE = 2;
 }
 
 // Group message delivery status
 enum DeliveryStatusSave {
-  DELIVERY_STATUS_SAVE_UNPUBLISHED = 0;
-  DELIVERY_STATUS_SAVE_PUBLISHED = 1;
-  DELIVERY_STATUS_SAVE_FAILED = 2;
+  DELIVERY_STATUS_SAVE_UNSPECIFIED = 0;
+  DELIVERY_STATUS_SAVE_UNPUBLISHED = 1;
+  DELIVERY_STATUS_SAVE_PUBLISHED = 2;
+  DELIVERY_STATUS_SAVE_FAILED = 3;
 }
 
 // Group message content type
 enum ContentTypeSave {
-  CONTENT_TYPE_SAVE_UNKNOWN = 0;
-  CONTENT_TYPE_SAVE_TEXT = 1;
-  CONTENT_TYPE_SAVE_GROUP_MEMBERSHIP_CHANGE = 2;
-  CONTENT_TYPE_SAVE_GROUP_UPDATED = 3;
-  CONTENT_TYPE_SAVE_REACTION = 4;
-  CONTENT_TYPE_SAVE_READ_RECEIPT = 5;
-  CONTENT_TYPE_SAVE_REPLY = 6;
-  CONTENT_TYPE_SAVE_ATTACHMENT = 7;
-  CONTENT_TYPE_SAVE_REMOTE_ATTACHMENT = 8;
-  CONTENT_TYPE_SAVE_TRANSACTION_REFERENCE = 9;
+  CONTENT_TYPE_SAVE_UNSPECIFIED = 0;
+  CONTENT_TYPE_SAVE_UNKNOWN = 1;
+  CONTENT_TYPE_SAVE_TEXT = 2;
+  CONTENT_TYPE_SAVE_GROUP_MEMBERSHIP_CHANGE = 3;
+  CONTENT_TYPE_SAVE_GROUP_UPDATED = 4;
+  CONTENT_TYPE_SAVE_REACTION = 5;
+  CONTENT_TYPE_SAVE_READ_RECEIPT = 6;
+  CONTENT_TYPE_SAVE_REPLY = 7;
+  CONTENT_TYPE_SAVE_ATTACHMENT = 8;
+  CONTENT_TYPE_SAVE_REMOTE_ATTACHMENT = 9;
+  CONTENT_TYPE_SAVE_TRANSACTION_REFERENCE = 10;
 }