diff --git a/src/folder/foldertreeview.cpp b/src/folder/foldertreeview.cpp
index d14eb1a..8b1bee0 100644
--- a/src/folder/foldertreeview.cpp
+++ b/src/folder/foldertreeview.cpp
@@ -273,7 +273,7 @@ void FolderTreeView::slotHeaderContextMenuChangeHeader(bool)
         return;
     }
 
-    if (id > header()->count()) {
+    if (id >= header()->count()) {
         return;
     }