diff --git a/app/discussion/client/createDiscussionMessageAction.js b/app/discussion/client/createDiscussionMessageAction.js
index 7d107be268b2..120001c9e52d 100644
--- a/app/discussion/client/createDiscussionMessageAction.js
+++ b/app/discussion/client/createDiscussionMessageAction.js
@@ -22,12 +22,12 @@ Meteor.startup(function() {
 			label: 'Discussion_start',
 			context: ['message', 'message-mobile'],
 			async action() {
-				const { msg: message } = messageArgs(this);
+				const { msg: message, room } = messageArgs(this);
 
 				imperativeModal.open({
 					component: CreateDiscussion,
 					props: {
-						defaultParentRoom: message.rid,
+						defaultParentRoom: room.prid || room._id,
 						onClose: imperativeModal.close,
 						parentMessageId: message._id,
 						nameSuggestion: message?.msg?.substr(0, 140),
diff --git a/app/discussion/client/discussionFromMessageBox.js b/app/discussion/client/discussionFromMessageBox.js
index 668cf6ac75b5..e2a8b29c845b 100644
--- a/app/discussion/client/discussionFromMessageBox.js
+++ b/app/discussion/client/discussionFromMessageBox.js
@@ -20,7 +20,7 @@ Meteor.startup(function() {
 				imperativeModal.open({
 					component: CreateDiscussion,
 					props: {
-						defaultParentRoom: data.rid,
+						defaultParentRoom: data.prid || data.rid,
 						onClose: imperativeModal.close,
 					},
 				});
diff --git a/app/discussion/server/methods/createDiscussion.js b/app/discussion/server/methods/createDiscussion.js
index b9d28a0d58df..8c1ea7dbb3d3 100644
--- a/app/discussion/server/methods/createDiscussion.js
+++ b/app/discussion/server/methods/createDiscussion.js
@@ -38,7 +38,7 @@ const mentionMessage = (rid, { _id, username, name }, message_embedded) => {
 };
 
 const create = ({ prid, pmid, t_name, reply, users, user, encrypted }) => {
-	// if you set both, prid and pmid, and the rooms doesnt match... should throw an error)
+	// if you set both, prid and pmid, and the rooms dont match... should throw an error)
 	let message = false;
 	if (pmid) {
 		message = Messages.findOne({ _id: pmid });
diff --git a/app/ui-message/client/messageBox/messageBox.js b/app/ui-message/client/messageBox/messageBox.js
index 8d67e3466bdc..d8cf0424deff 100644
--- a/app/ui-message/client/messageBox/messageBox.js
+++ b/app/ui-message/client/messageBox/messageBox.js
@@ -477,6 +477,7 @@ Template.messageBox.events({
 			data: {
 				rid: this.rid,
 				tmid: this.tmid,
+				prid: this.subscription.prid,
 				messageBox: instance.firstNode,
 			},
 			activeElement: event.currentTarget,
@@ -494,6 +495,7 @@ Template.messageBox.events({
 					rid: this.rid,
 					tmid: this.tmid,
 					messageBox: instance.firstNode,
+					prid: this.subscription.prid,
 					event,
 				});
 			});