diff --git src/bp-activity/bp-activity-template.php src/bp-activity/bp-activity-template.php
index e80c965..85608aa 100644
--- src/bp-activity/bp-activity-template.php
+++ src/bp-activity/bp-activity-template.php
@@ -295,7 +295,7 @@ class BP_Activity_Template {
 		$this->pag_num  = bp_sanitize_pagination_arg( 'num',          $r['per_page'] );
 
 		// Check if blog/forum replies are disabled
-		$this->disable_blogforum_replies = (bool) bp_core_get_root_option( 'bp-disabled-blogforum-comments' );
+		$this->disable_blogforum_replies = (bool) bp_core_get_root_option( 'bp-disable-blogforum-comments' );
 
 		// Get an array of the logged in user's favorite activities
 		$this->my_favs = maybe_unserialize( bp_get_user_meta( bp_loggedin_user_id(), 'bp_favorite_activities', true ) );