diff --git a/cmake/qet_compilation_vars.cmake b/cmake/qet_compilation_vars.cmake
index bf14af02c..2bc2edcce 100644
--- a/cmake/qet_compilation_vars.cmake
+++ b/cmake/qet_compilation_vars.cmake
@@ -101,7 +101,6 @@ set(QET_RES_FILES
   ${QET_DIR}/sources/ui/configsaveloaderwidget.ui
   ${QET_DIR}/sources/ui/diagramcontextwidget.ui
   ${QET_DIR}/sources/ui/diagrameditorhandlersizewidget.ui
-  ${QET_DIR}/sources/ui/diagramselection.ui
   ${QET_DIR}/sources/ui/dialogwaiting.ui
   ${QET_DIR}/sources/ui/dynamicelementtextitemeditor.ui
   ${QET_DIR}/sources/ui/elementinfopartwidget.ui
@@ -699,8 +698,6 @@ set(QET_SRC_FILES
   ${QET_DIR}/sources/ui/diagrampropertiesdialog.h
   ${QET_DIR}/sources/ui/diagrampropertieseditordockwidget.cpp
   ${QET_DIR}/sources/ui/diagrampropertieseditordockwidget.h
-  ${QET_DIR}/sources/ui/diagramselection.cpp
-  ${QET_DIR}/sources/ui/diagramselection.h
   ${QET_DIR}/sources/ui/backupdialog.cpp
   ${QET_DIR}/sources/ui/backupdialog.h
   ${QET_DIR}/sources/ui/dialogwaiting.cpp
diff --git a/sources/ui/diagramselection.cpp b/sources/ui/diagramselection.cpp
deleted file mode 100644
index 222e747df..000000000
--- a/sources/ui/diagramselection.cpp
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
-		Copyright 2006-2026 The QElectroTech Team
-		This file is part of QElectroTech.
-		
-		QElectroTech is free software: you can redistribute it and/or modify
-		it under the terms of the GNU General Public License as published by
-		the Free Software Foundation, either version 2 of the License, or
-		(at your option) any later version.
-		
-		QElectroTech is distributed in the hope that it will be useful,
-		but WITHOUT ANY WARRANTY; without even the implied warranty of
-		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-		GNU General Public License for more details.
-		
-		You should have received a copy of the GNU General Public License
-		along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
-*/
-#include "diagramselection.h"
-#include "ui_diagramselection.h"
-
-diagramselection::diagramselection(QETProject *prj, QWidget *parent) :
-	QWidget(parent),
-	ui(new Ui::diagramselection),
-	prj_ (prj),
-	list_diagram_ (prj -> diagrams())
-{
-	ui -> setupUi(this);
-
-	QString project_title = prj_ -> title();
-	if (project_title.isEmpty()) project_title = tr("Projet sans titre");
-
-	ui -> label_prj -> setText( tr("Projet : ") + project_title );
-	load_TableDiagram();
-}
-
-diagramselection::~diagramselection()
-{
-	delete ui;
-}
-
-/**
-	@brief load all Diagrams of project in table
-*/
-void diagramselection::load_TableDiagram()
-{
-	// Clear all items
-	ui -> tableDiagram -> clear();
-	for (int i=ui -> tableDiagram -> rowCount()-1; i >= 0; --i) {
-		ui -> tableDiagram->removeRow(i);
-	}
-	for (int i=ui -> tableDiagram -> columnCount()-1; i>=0; --i) {
-		ui -> tableDiagram->removeColumn(i);
-	}
-
-	// Set the setting of table
-	ui -> tableDiagram -> setColumnCount(2);
-	ui -> tableDiagram -> setSelectionBehavior	(QAbstractItemView::SelectRows);
-	ui -> tableDiagram -> setSelectionMode		(QAbstractItemView::SingleSelection);
-	ui -> tableDiagram -> setEditTriggers		(QAbstractItemView::NoEditTriggers);
-	QStringList titles;
-	titles.clear();
-	titles << tr("Sélection") << tr("Nom");
-	ui-> tableDiagram -> setHorizontalHeaderLabels( titles );
-	
-	// List Diagrams
-	for(int i=0,j=0; i<list_diagram_.count(); i++,j++){
-		QTableWidgetItem *item_Name  = new QTableWidgetItem();
-		QTableWidgetItem *item_State = new QTableWidgetItem();
-
-		QString diagram_title = list_diagram_.at(i) -> title();
-		if (diagram_title.isEmpty())
-			diagram_title = tr("Folio sans titre");
-
-		item_Name  -> setData(Qt::DisplayRole, diagram_title);
-		item_State -> setData(Qt::CheckStateRole, Qt::Checked);
-
-		ui -> tableDiagram -> setRowCount(j+1);
-		ui -> tableDiagram -> setItem(j, 0, item_State);
-		ui -> tableDiagram -> setItem(j, 1, item_Name);
-
-	}
-	ui -> tableDiagram -> horizontalHeader() -> setStretchLastSection(true);
-}
-
-/**
-	@brief get list of Diagrams is selected
-	@return this list of Diagrams
-*/
-QList<Diagram *> diagramselection::list_of_DiagramSelected()
-{
-	QList<Diagram *> listDiag;
-	for(int i=0; i<ui -> tableDiagram -> rowCount();i++){
-		if(ui -> tableDiagram -> item(i, 0)->checkState()){
-			listDiag.push_back( list_diagram_[i] );
-		}
-	}
-	return listDiag;
-}
-
-/**
-	@brief contextMenuRequested
-	@param pos
-*/
-void diagramselection::on_tableDiagram_customContextMenuRequested(const QPoint &pos){
-	QMenu menu(this);
-	QAction *desl = menu.addAction( tr("Désélectionner tout") );
-	menu.addAction(QIcon(":/ico/16x16/dialog-ok.png"), tr("Sélectionner tout") );
-	
-	// Exec Menu
-	QAction *ret = menu.exec(ui -> tableDiagram -> viewport() -> mapToGlobal(pos));	
-	if (ret == desl)	{
-		for(int i=0; i<ui -> tableDiagram -> rowCount();i++)
-			ui -> tableDiagram -> item(i, 0)->setCheckState(Qt::Unchecked);
-	}
-	else{
-		for(int i=0; i<ui -> tableDiagram -> rowCount();i++)
-			ui -> tableDiagram -> item(i, 0)->setCheckState(Qt::Checked);
-	}
-}
-
diff --git a/sources/ui/diagramselection.h b/sources/ui/diagramselection.h
deleted file mode 100644
index 016851c85..000000000
--- a/sources/ui/diagramselection.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
-		Copyright 2006-2026 The QElectroTech Team
-		This file is part of QElectroTech.
-		
-		QElectroTech is free software: you can redistribute it and/or modify
-		it under the terms of the GNU General Public License as published by
-		the Free Software Foundation, either version 2 of the License, or
-		(at your option) any later version.
-		
-		QElectroTech is distributed in the hope that it will be useful,
-		but WITHOUT ANY WARRANTY; without even the implied warranty of
-		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-		GNU General Public License for more details.
-		
-		You should have received a copy of the GNU General Public License
-		along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
-*/
-#ifndef DIAGRAMSELECTION_H
-#define DIAGRAMSELECTION_H
-
-#include "../diagram.h"
-#include "../qetproject.h"
-
-#include <QWidget>
-
-namespace Ui {
-	class diagramselection;
-}
-
-class diagramselection : public QWidget
-{
-	Q_OBJECT
-	
-	public:
-	explicit diagramselection(QETProject *prj, QWidget *parent = nullptr);
-	~diagramselection() override;
-	
-	QList<Diagram *> list_of_DiagramSelected();
-	
-	private slots:
-	void on_tableDiagram_customContextMenuRequested(const QPoint &pos);
-	
-	private:
-	Ui::diagramselection *ui;
-	QETProject *prj_;
-	QList<Diagram *> list_diagram_;
-	
-	void load_TableDiagram();
-};
-
-#endif // DIAGRAMSELECTION_H
diff --git a/sources/ui/diagramselection.ui b/sources/ui/diagramselection.ui
deleted file mode 100644
index 0a1e6459a..000000000
--- a/sources/ui/diagramselection.ui
+++ /dev/null
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>diagramselection</class>
- <widget class="QWidget" name="diagramselection">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>400</width>
-    <height>300</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>Form</string>
-  </property>
-  <layout class="QVBoxLayout" name="verticalLayout_2">
-   <item>
-    <layout class="QVBoxLayout" name="verticalLayout">
-     <item>
-      <widget class="QLabel" name="label_prj">
-       <property name="text">
-        <string>TextLabel</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QTableWidget" name="tableDiagram">
-       <property name="contextMenuPolicy">
-        <enum>Qt::CustomContextMenu</enum>
-       </property>
-       <property name="frameShape">
-        <enum>QFrame::StyledPanel</enum>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </item>
-  </layout>
- </widget>
- <resources/>
- <connections/>
-</ui>