diff --git a/res/css/structures/_ThreadsActivityCentre.pcss b/res/css/structures/_ThreadsActivityCentre.pcss
index f958837476f..eb5ac2ac8a3 100644
--- a/res/css/structures/_ThreadsActivityCentre.pcss
+++ b/res/css/structures/_ThreadsActivityCentre.pcss
@@ -43,12 +43,6 @@
         }
     }
 
-    & > .mx_ThreadsActivityCentreButton_IndicatorIcon {
-        height: 24px;
-        width: 24px;
-        padding: 4px;
-    }
-
     & .mx_ThreadsActivityCentreButton_Icon {
         color: $secondary-content;
     }
diff --git a/src/components/views/spaces/threads-activity-centre/ThreadsActivityCentreButton.tsx b/src/components/views/spaces/threads-activity-centre/ThreadsActivityCentreButton.tsx
index 00cb21805fa..13478c8c5bf 100644
--- a/src/components/views/spaces/threads-activity-centre/ThreadsActivityCentreButton.tsx
+++ b/src/components/views/spaces/threads-activity-centre/ThreadsActivityCentreButton.tsx
@@ -56,6 +56,7 @@ export const ThreadsActivityCentreButton = forwardRef<HTMLDivElement, ThreadsAct
                 <IndicatorIcon
                     className="mx_ThreadsActivityCentreButton_IndicatorIcon"
                     indicator={notificationLevelToIndicator(notificationLevel)}
+                    size="24px"
                 >
                     <Icon className="mx_ThreadsActivityCentreButton_Icon" />
                 </IndicatorIcon>