diff --git a/src/components/TinyMCEEditor.jsx b/src/components/TinyMCEEditor.jsx
index 510adf17e..ff266ef4a 100644
--- a/src/components/TinyMCEEditor.jsx
+++ b/src/components/TinyMCEEditor.jsx
@@ -1,4 +1,5 @@
 import React, { useCallback, useEffect, useState } from 'react';
+import PropTypes from 'prop-types';
 
 import { ActionRow, AlertModal, Button } from '@openedx/paragon';
 import { Editor } from '@tinymce/tinymce-react';
@@ -152,6 +153,7 @@ const TinyMCEEditor = (props) => {
           relative_urls: false,
           default_link_target: '_blank',
           target_list: false,
+          placeholder: props.placeholder,
           images_upload_handler: uploadHandler,
           setup,
         }}
@@ -178,4 +180,12 @@ const TinyMCEEditor = (props) => {
   );
 };
 
+TinyMCEEditor.propTypes = {
+  placeholder: PropTypes.string,
+};
+
+TinyMCEEditor.defaultProps = {
+  placeholder: '',
+};
+
 export default React.memo(TinyMCEEditor);
diff --git a/src/discussions/posts/post-editor/PostEditor.jsx b/src/discussions/posts/post-editor/PostEditor.jsx
index a2f57959c..2a4c62120 100644
--- a/src/discussions/posts/post-editor/PostEditor.jsx
+++ b/src/discussions/posts/post-editor/PostEditor.jsx
@@ -409,6 +409,7 @@ const PostEditor = ({
             value={values.comment}
             onEditorChange={formikCompatibleHandler(handleChange, 'comment')}
             onBlur={formikCompatibleHandler(handleBlur, 'comment')}
+            placeholder={intl.formatMessage(messages.postContent)}
           />
           <PostHelpPanel />
           <FormikErrorFeedback name="comment" />
diff --git a/src/discussions/posts/post-editor/messages.js b/src/discussions/posts/post-editor/messages.js
index e91781317..c58d4dd2e 100644
--- a/src/discussions/posts/post-editor/messages.js
+++ b/src/discussions/posts/post-editor/messages.js
@@ -55,7 +55,11 @@ const messages = defineMessages({
   },
   postTitle: {
     id: 'discussions.post.editor.title',
-    defaultMessage: 'Post title',
+    defaultMessage: 'Post title*',
+  },
+  postContent: {
+    id: 'discussions.post.editor.postContent',
+    defaultMessage: 'Post content*',
   },
   titleDescription: {
     id: 'discussions.post.editor.titleDescription',