diff --git a/src/app/browser/container/tab.h b/src/app/browser/container/tab.h
index eeb9b3a3..c63ddd21 100644
--- a/src/app/browser/container/tab.h
+++ b/src/app/browser/container/tab.h
@@ -17,6 +17,7 @@ namespace app
 
                     GtkWidget *gtk;
 
+                    const gboolean REORDERABLE = true;
                     const gboolean SCROLLABLE = true;
 
                     Tab(