diff --git a/src/View/MainWindowTabGraph.py b/src/View/MainWindowTabGraph.py
index 048d8328..8da4968a 100644
--- a/src/View/MainWindowTabGraph.py
+++ b/src/View/MainWindowTabGraph.py
@@ -14,7 +14,9 @@ from View.PlotXY import PlotXY
 from View.Network.GraphWidget import GraphWidget
 
 from PyQt5.QtCore import Qt
-from PyQt5.QtWidgets import QWidget, QGroupBox, QLabel, QHBoxLayout, QVBoxLayout
+from PyQt5.QtWidgets import (
+    QWidget, QGroupBox, QLabel, QHBoxLayout, QVBoxLayout, QSplitter,
+)
 
 
 class WidgetGraph(QWidget):
@@ -27,6 +29,9 @@ class WidgetGraph(QWidget):
         self._trad = trad
 
         layout = QHBoxLayout(self)
+        self._splitter = QSplitter(Qt.Horizontal, self)
+        self._splitter.setChildrenCollapsible(False)
+        layout.addWidget(self._splitter)
         self._graph_widget = None
 
         self._graph_group = QGroupBox(
@@ -40,7 +45,7 @@ class WidgetGraph(QWidget):
         self._graph_title.setWordWrap(True)
         self._graph_layout.addWidget(self._graph_title)
         self._update_graph_title()
-        layout.addWidget(self._graph_group, 1)
+        self._splitter.addWidget(self._graph_group)
 
         self.canvas = MplCanvas(width=5, height=4, dpi=100)
         self.canvas.setObjectName("canvas_graph")
@@ -54,7 +59,10 @@ class WidgetGraph(QWidget):
         self._plot_layout = QVBoxLayout(self._plot_group)
         self._plot_layout.addWidget(self.toolbar)
         self._plot_layout.addWidget(self.canvas, 1)
-        layout.addWidget(self._plot_group, 1)
+        self._splitter.addWidget(self._plot_group)
+        self._splitter.setStretchFactor(0, 1)
+        self._splitter.setStretchFactor(1, 1)
+        self._splitter.setSizes([1000, 1000])
 
         self.plot = PlotXY(
             canvas=self.canvas,