diff --git a/eeschema/libeditframe.cpp b/eeschema/libeditframe.cpp
index de1c3e8243..b5628f1e2a 100644
--- a/eeschema/libeditframe.cpp
+++ b/eeschema/libeditframe.cpp
@@ -305,8 +305,8 @@ LIB_EDIT_FRAME::LIB_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
     m_auimgr.AddPane( m_messagePanel,
                       wxAuiPaneInfo( mesg ).Name( "MsgPanel" ).Bottom().Layer( 10 ) );
 
-    m_auimgr.AddPane( m_treePane,
-                      wxAuiPaneInfo( vert ).Name( "ComponentTree" ).Left().Row( 1 ).Resizable().MinSize( 300, 400 ) );
+    m_auimgr.AddPane( m_treePane, wxAuiPaneInfo().Name( "ComponentTree" ).Left().Row( 1 )
+            .Resizable().MinSize( 250, 400 ).Dock().CloseButton( false ) );
 
     m_auimgr.Update();