diff --git a/gui/include/DataSource/DataSourceWidget.h b/gui/include/DataSource/DataSourceWidget.h
index 84e09dd..615adfd 100644
--- a/gui/include/DataSource/DataSourceWidget.h
+++ b/gui/include/DataSource/DataSourceWidget.h
@@ -32,6 +32,9 @@ private:
     Ui::DataSourceWidget *ui;
 
 private slots:
+    /// Slot called when the filtering text has changed
+    void filterChanged(const QString &text) noexcept;
+
     /// Slot called when right clicking on an item in the tree (displays a menu)
     void onTreeMenuRequested(const QPoint &pos) noexcept;
 };
diff --git a/gui/src/DataSource/DataSourceWidget.cpp b/gui/src/DataSource/DataSourceWidget.cpp
index 67bcf4a..33f7cdb 100644
--- a/gui/src/DataSource/DataSourceWidget.cpp
+++ b/gui/src/DataSource/DataSourceWidget.cpp
@@ -47,6 +47,9 @@ DataSourceWidget::DataSourceWidget(QWidget *parent) : QWidget{parent}, ui{new Ui
     // Connection to show a menu when right clicking on the tree
     connect(ui->treeWidget, &QTreeWidget::customContextMenuRequested, this,
             &DataSourceWidget::onTreeMenuRequested);
+
+    // Connection to filter tree
+    connect(ui->filterLineEdit, &QLineEdit::textChanged, this, &DataSourceWidget::filterChanged);
 }
 
 DataSourceWidget::~DataSourceWidget() noexcept
@@ -63,6 +66,10 @@ void DataSourceWidget::addDataSource(DataSourceItem *dataSource) noexcept
     }
 }
 
+void DataSourceWidget::filterChanged(const QString &text) noexcept
+{
+}
+
 void DataSourceWidget::onTreeMenuRequested(const QPoint &pos) noexcept
 {
     // Retrieves the selected item in the tree, and build the menu from its actions
diff --git a/gui/ui/DataSource/DataSourceWidget.ui b/gui/ui/DataSource/DataSourceWidget.ui
index 473ed3b..e5d6f22 100644
--- a/gui/ui/DataSource/DataSourceWidget.ui
+++ b/gui/ui/DataSource/DataSourceWidget.ui
@@ -14,19 +14,10 @@
    <string>Data sources</string>
   </property>
   <layout class="QGridLayout" name="gridLayout">
-   <property name="topMargin">
-    <number>0</number>
-   </property>
-   <property name="rightMargin">
-    <number>0</number>
-   </property>
-   <property name="bottomMargin">
-    <number>0</number>
-   </property>
-   <property name="spacing">
-    <number>0</number>
-   </property>
    <item row="0" column="0">
+    <widget class="QLineEdit" name="filterLineEdit"/>
+   </item>
+   <item row="1" column="0">
     <widget class="QTreeWidget" name="treeWidget">
      <column>
       <property name="text">