diff --git a/packages/ui/src/components/TopicSelectionDialog/TopicSelectionDialog.tsx b/packages/ui/src/components/TopicSelectionDialog/TopicSelectionDialog.tsx
index 209beb10f..69937cbfe 100644
--- a/packages/ui/src/components/TopicSelectionDialog/TopicSelectionDialog.tsx
+++ b/packages/ui/src/components/TopicSelectionDialog/TopicSelectionDialog.tsx
@@ -99,7 +99,7 @@ export const TopicSelectionDialog: React.FC<Props> = ({
           {title}
         </Typography>
       }
-      className="w-full md:w-[512px]"
+      className="w-full sm:w-[512px]"
       close={confirming ? undefined : onClose}
       open={opened}
     >