diff --git a/src/addon/mod/forum/providers/forum.ts b/src/addon/mod/forum/providers/forum.ts
index 450593d75..2b354bfb8 100644
--- a/src/addon/mod/forum/providers/forum.ts
+++ b/src/addon/mod/forum/providers/forum.ts
@@ -599,7 +599,8 @@ export class AddonModForumProvider {
      * @param forceCache True to always get the value from cache. false otherwise.
      * @param siteId Site ID. If not defined, current site.
      * @return Promise resolved with an object with:
-     *         - discussions: List of discussions.
+     *         - discussions: List of discussions. Note that for every discussion in the list discussion.id is the main post ID but
+     *             discussion ID is discussion.discussion.
      *         - canLoadMore: True if there may be more discussions to load.
      */
     getDiscussions(forumId: number, sortOrder?: number, page: number = 0, forceCache?: boolean, siteId?: string): Promise<any> {
diff --git a/src/addon/mod/forum/providers/helper.ts b/src/addon/mod/forum/providers/helper.ts
index 001337358..99ca1b487 100644
--- a/src/addon/mod/forum/providers/helper.ts
+++ b/src/addon/mod/forum/providers/helper.ts
@@ -280,7 +280,8 @@ export class AddonModForumHelperProvider {
         const findDiscussion = (page: number): Promise<any> => {
             return this.forumProvider.getDiscussions(forumId, undefined, page, false, siteId).then((response) => {
                 if (response.discussions && response.discussions.length > 0) {
-                    const discussion = response.discussions.find((discussion) => discussion.id == discussionId);
+                    // Note that discussion.id is the main post ID but discussion ID is discussion.discussion.
+                    const discussion = response.discussions.find((discussion) => discussion.discussion == discussionId);
                     if (discussion) {
                         return discussion;
                     }