diff --git a/app/components/post_textbox/post_textbox.js b/app/components/post_textbox/post_textbox.js
index 68c4201a9..35dc0184f 100644
--- a/app/components/post_textbox/post_textbox.js
+++ b/app/components/post_textbox/post_textbox.js
@@ -239,7 +239,7 @@ export default class PostTextbox extends PureComponent {
                 }),
                 intl.formatMessage({
                     id: 'mobile.post_textbox.uploadFailedDesc',
-                    defaultMessage: 'Some attachments failed to upload to the server, Are you sure you want to post the message?',
+                    defaultMessage: 'Some attachments failed to upload to the server. Are you sure you want to post the message?',
                 }),
                 [{
                     text: intl.formatMessage({id: 'mobile.channel_info.alertNo', defaultMessage: 'No'}),
diff --git a/assets/base/i18n/en.json b/assets/base/i18n/en.json
index 89c3f1ba6..adbf5c740 100644
--- a/assets/base/i18n/en.json
+++ b/assets/base/i18n/en.json
@@ -334,7 +334,7 @@
   "mobile.post_textbox.empty.message": "You are trying to send an empty message.\nPlease make sure you have a message or at least one attached file.",
   "mobile.post_textbox.empty.ok": "OK",
   "mobile.post_textbox.empty.title": "Empty Message",
-  "mobile.post_textbox.uploadFailedDesc": "Some attachments failed to upload to the server, Are you sure you want to post the message?",
+  "mobile.post_textbox.uploadFailedDesc": "Some attachments failed to upload to the server. Are you sure you want to post the message?",
   "mobile.post_textbox.uploadFailedTitle": "Attachment failure",
   "mobile.post.cancel": "Cancel",
   "mobile.post.delete_question": "Are you sure you want to delete this post?",