diff --git a/web/src/components/Sidebar.tsx b/web/src/components/Sidebar.tsx
index b4b6358..8ba37c2 100644
--- a/web/src/components/Sidebar.tsx
+++ b/web/src/components/Sidebar.tsx
@@ -157,6 +157,9 @@ export function Sidebar() {
                 style={{ fontSize: '0.75rem', marginTop: 4 }}
               />
             )}
+            <button type="submit" disabled={!newNetName.trim()} style={{ marginTop: 4, width: '100%', fontSize: '12px', padding: '3px 8px' }}>
+              Join
+            </button>
           </form>
         )}
       </div>