diff --git a/src/Avalonia.Controls/TreeViewItem.cs b/src/Avalonia.Controls/TreeViewItem.cs
index 70ffd218b1..a61d9f75cd 100644
--- a/src/Avalonia.Controls/TreeViewItem.cs
+++ b/src/Avalonia.Controls/TreeViewItem.cs
@@ -165,7 +165,7 @@ namespace Avalonia.Controls
                     {
                         Key.Left => ApplyToItemOrRecursivelyIfCtrl(FocusAwareCollapseItem, e.KeyModifiers),
                         Key.Right => ApplyToItemOrRecursivelyIfCtrl(ExpandItem, e.KeyModifiers),
-                        Key.Enter or Key.Space => ApplyToItemOrRecursivelyIfCtrl(IsExpanded ? CollapseItem : ExpandItem, e.KeyModifiers),
+                        Key.Enter => ApplyToItemOrRecursivelyIfCtrl(IsExpanded ? CollapseItem : ExpandItem, e.KeyModifiers),
 
                         // do not handle CTRL with numpad keys
                         Key.Subtract => FocusAwareCollapseItem,