diff --git a/src/modules/netinstall/NetInstallPage.cpp b/src/modules/netinstall/NetInstallPage.cpp
index 80e6a58f9..17c16a472 100644
--- a/src/modules/netinstall/NetInstallPage.cpp
+++ b/src/modules/netinstall/NetInstallPage.cpp
@@ -76,6 +76,6 @@ NetInstallPage::onActivate()
     const QVariantList groups = gs->value( "NetinstallAdd" ).toList();
     if ( !groups.isEmpty() )
     {
-        m_config->model()->appendModelData( groups, "packageChooser" );
+        m_config->model()->appendModelData( groups );
     }
 }
diff --git a/src/modules/netinstall/PackageModel.cpp b/src/modules/netinstall/PackageModel.cpp
index 9ffaa2650..ac7443c15 100644
--- a/src/modules/netinstall/PackageModel.cpp
+++ b/src/modules/netinstall/PackageModel.cpp
@@ -14,6 +14,17 @@
 #include "utils/Variant.h"
 #include "utils/Yaml.h"
 
+/** @brief Appends groups to the tree
+ *
+ * Uses the data from @p groupList to add elements to the
+ * existing tree that m_rootItem points to.  If m_rootItem
+ * is not valid, it does nothing
+ *
+ * Before adding anything to the model, it ensures that there
+ * is no existing data from the same source.  If there is, that
+ * data is pruned first
+ *
+ */
 static void
 setSelections2( const QStringList& selectNames, PackageTreeItem* item )
 {
@@ -28,6 +39,28 @@ setSelections2( const QStringList& selectNames, PackageTreeItem* item )
     }
 }
 
+/** @brief Collects all the "source" values from @p groupList
+ *
+ * Iterates over @p groupList and returns all nonempty "source"
+ * values from the maps.
+ *
+ */
+static QStringList
+collectSources( const QVariantList& groupList )
+{
+    QStringList sources;
+    for ( const QVariant& group : groupList )
+    {
+        QVariantMap groupMap = group.toMap();
+        if ( !groupMap[ "source" ].toString().isEmpty() )
+        {
+            sources.append( groupMap[ "source" ].toString() );
+        }
+    }
+
+    return sources;
+}
+
 PackageModel::PackageModel( QObject* parent )
     : QAbstractItemModel( parent )
 {
@@ -334,19 +367,24 @@ PackageModel::setupModelData( const QVariantList& l )
 }
 
 void
-PackageModel::appendModelData( const QVariantList& groupList, const QString& source )
+PackageModel::appendModelData( const QVariantList& groupList )
 {
     if ( m_rootItem )
     {
         Q_EMIT beginResetModel();
 
-        // Prune any existing data from the same source
-        for ( int i = 0; i < m_rootItem->childCount(); i++ )
+        const QStringList sources = collectSources( groupList );
+
+        if ( !sources.isEmpty() )
         {
-            PackageTreeItem* child = m_rootItem->child( i );
-            if ( child->source() == source )
+            // Prune any existing data from the same source
+            for ( int i = 0; i < m_rootItem->childCount(); i++ )
             {
-                m_rootItem->removeChild( i );
+                PackageTreeItem* child = m_rootItem->child( i );
+                if ( sources.contains( child->source() ) )
+                {
+                    m_rootItem->removeChild( i );
+                }
             }
         }
 
diff --git a/src/modules/netinstall/PackageModel.h b/src/modules/netinstall/PackageModel.h
index 3e79faf98..5146c63dd 100644
--- a/src/modules/netinstall/PackageModel.h
+++ b/src/modules/netinstall/PackageModel.h
@@ -68,18 +68,7 @@ public:
     PackageTreeItem::List getPackages() const;
     PackageTreeItem::List getItemPackages( PackageTreeItem* item ) const;
 
-    /** @brief Appends groups to the tree
-     *
-     * Uses the data from @p groupList to add elements to the
-     * existing tree that m_rootItem points to.  If m_rootItem
-     * is not valid, it does nothing
-     *
-     * Before adding anything to the model, it ensures that there
-     * is no existing data from the same source.  If there is, that
-     * data is pruned first
-     *
-     */
-    void appendModelData(const QVariantList& groupList, const QString &source );
+    void appendModelData(const QVariantList& groupList);
 
 private:
     friend class ItemTests;
diff --git a/src/modules/packagechooser/PackageModel.cpp b/src/modules/packagechooser/PackageModel.cpp
index 3d1c0c044..f1d1184ad 100644
--- a/src/modules/packagechooser/PackageModel.cpp
+++ b/src/modules/packagechooser/PackageModel.cpp
@@ -140,14 +140,14 @@ QVariantList
 PackageListModel::getNetinstallDataForNames( const QStringList& ids ) const
 {
     QVariantList l;
-    for ( auto &p : m_packages )
+    for ( auto& p : m_packages )
     {
         if ( ids.contains( p.id ) )
         {
             if ( !p.netinstallData.isEmpty() )
             {
                 QVariantMap newData = p.netinstallData;
-                newData["source"] = "packageChooser";
+                newData[ "source" ] = QStringLiteral( "packageChooser" );
                 l.append( newData );
             }
         }