diff --git a/gui/include/Visualization/operations/MenuBuilder.h b/gui/include/Visualization/operations/MenuBuilder.h
index cb78fb7..c739162 100644
--- a/gui/include/Visualization/operations/MenuBuilder.h
+++ b/gui/include/Visualization/operations/MenuBuilder.h
@@ -25,11 +25,12 @@ public:
     void addAction(const QString &actionName, ActionFun actionFunction);
 
     /**
-     * Adds a new menu to the current menu
+     * Adds a new menu to the current menu and returns it
      * @param name the name of the menu
      * @param icon the icon of the menu (can be null)
+     * @returns the created menu, nullptr if it couldn't be created
      */
-    void addMenu(const QString &name, const QIcon &icon = {});
+    QMenu *addMenu(const QString &name, const QIcon &icon = {});
 
     /// Adds a separator to the current menu. The separator is added only if the menu already
     /// contains entries
diff --git a/gui/src/Visualization/operations/GenerateVariableMenuOperation.cpp b/gui/src/Visualization/operations/GenerateVariableMenuOperation.cpp
index e7190da..41592e1 100644
--- a/gui/src/Visualization/operations/GenerateVariableMenuOperation.cpp
+++ b/gui/src/Visualization/operations/GenerateVariableMenuOperation.cpp
@@ -21,7 +21,11 @@ struct GenerateVariableMenuOperation::GenerateVariableMenuOperationPrivate {
     void visitRootEnter()
     {
         // Creates the root menu
-        m_PlotMenuBuilder.addMenu(QObject::tr("Plot"), QIcon{":/icones/plot.png"});
+        if (auto plotMenu
+            = m_PlotMenuBuilder.addMenu(QObject::tr("Plot"), QIcon{":/icones/plot.png"})) {
+            plotMenu->setEnabled(m_Variable && m_Variable->dataSeries() != nullptr);
+        }
+
         m_UnplotMenuBuilder.addMenu(QObject::tr("Unplot"), QIcon{":/icones/unplot.png"});
     }
 
diff --git a/gui/src/Visualization/operations/MenuBuilder.cpp b/gui/src/Visualization/operations/MenuBuilder.cpp
index 3d21803..cd45bde 100644
--- a/gui/src/Visualization/operations/MenuBuilder.cpp
+++ b/gui/src/Visualization/operations/MenuBuilder.cpp
@@ -12,13 +12,16 @@ MenuBuilder::MenuBuilder(QMenu *menu)
     }
 }
 
-void MenuBuilder::addMenu(const QString &name, const QIcon &icon)
+QMenu *MenuBuilder::addMenu(const QString &name, const QIcon &icon)
 {
     if (auto currMenu = currentMenu()) {
-        m_Menus.push(currMenu->addMenu(icon, name));
+        auto menu = currMenu->addMenu(icon, name);
+        m_Menus.push(menu);
+        return menu;
     }
     else {
         qCCritical(LOG_MenuBuilder()) << QObject::tr("No current menu to attach the new menu");
+        return nullptr;
     }
 }