diff --git a/src/electron-preload/webview/protonmail/lib/database/mail.ts b/src/electron-preload/webview/protonmail/lib/database/mail.ts
index bc05cd455..ab919562e 100644
--- a/src/electron-preload/webview/protonmail/lib/database/mail.ts
+++ b/src/electron-preload/webview/protonmail/lib/database/mail.ts
@@ -39,7 +39,7 @@ export async function buildMail(input: Rest.Model.Message, api: Api): Promise<Da
         ccRecipients: input.CCList.map((address, i) => Address({...address, ...buildAddressId(input, "CCList", i)})),
         bccRecipients: input.BCCList.map((address, i) => Address({...address, ...buildAddressId(input, "BCCList", i)})),
         attachments: input.Attachments.map(File),
-        unread: !Boolean(input.IsRead),
+        unread: Boolean(input.Unread),
         state: directTypeMapping[input.Type],
         confidential: isConfindencial(input),
         replyType: (input.IsReplied || input.IsRepliedAll) && input.IsForwarded
diff --git a/src/electron-preload/webview/protonmail/lib/rest/model/response-entity.ts b/src/electron-preload/webview/protonmail/lib/rest/model/response-entity.ts
index 6253d1269..21d2e79bc 100644
--- a/src/electron-preload/webview/protonmail/lib/rest/model/response-entity.ts
+++ b/src/electron-preload/webview/protonmail/lib/rest/model/response-entity.ts
@@ -58,7 +58,6 @@ export interface Message<TypeRecord = typeof MAIL_TYPE._.nameValueMap,
     Header: string;
     IsEncrypted: IsEncryptedRecord[keyof IsEncryptedRecord];
     IsForwarded: NumberBoolean;
-    IsRead: NumberBoolean;
     IsReplied: NumberBoolean;
     IsRepliedAll: NumberBoolean;
     LabelIDs: string[];