diff --git a/src/libcalamares/Settings.cpp b/src/libcalamares/Settings.cpp
index 770df1438..4dc165679 100644
--- a/src/libcalamares/Settings.cpp
+++ b/src/libcalamares/Settings.cpp
@@ -72,7 +72,18 @@ namespace Calamares
 {
 
 InstanceDescription::InstanceDescription( const QVariantMap& m )
+    : module( m.value( "module" ).toString() )
+    , id( m.value( "id" ).toString() )
+    , config( m.value( "config" ).toString() )
 {
+    if ( id.isEmpty() )
+    {
+        id = module;
+    }
+    if ( config.isEmpty() )
+    {
+        config = module + QStringLiteral( ".conf" );
+    }
 }
 
 Settings* Settings::s_instance = nullptr;
diff --git a/src/libcalamares/Settings.h b/src/libcalamares/Settings.h
index 673d6fe73..ce9d158e3 100644
--- a/src/libcalamares/Settings.h
+++ b/src/libcalamares/Settings.h
@@ -32,16 +32,20 @@
 namespace Calamares
 {
 
-class DLLEXPORT InstanceDescription
+struct DLLEXPORT InstanceDescription
 {
-public:
     InstanceDescription( const QVariantMap& );
+
+    QString module;  ///< Module name (e.g. "welcome")
+    QString id;  ///< Id, to distinguish multiple instances (e.g. "one", for "welcome@one")
+    QString config;  ///< Config-file name (for multiple instances)
 };
 
 class DLLEXPORT Settings : public QObject
 {
     Q_OBJECT
     explicit Settings( const QString& settingsFilePath, bool debugMode );
+
 public:
     static Settings* instance();
     /// @brief Find a settings.conf, following @p debugMode
diff --git a/src/libcalamaresui/modulesystem/ModuleManager.cpp b/src/libcalamaresui/modulesystem/ModuleManager.cpp
index 6202493e2..f88d5999d 100644
--- a/src/libcalamaresui/modulesystem/ModuleManager.cpp
+++ b/src/libcalamaresui/modulesystem/ModuleManager.cpp
@@ -129,9 +129,8 @@ ModuleManager::doInit()
     }
     // At this point m_availableDescriptorsByModuleName is filled with
     // the modules that were found in the search paths.
-    cDebug() << "Found"
-        << m_availableDescriptorsByModuleName.count() << "modules"
-        << m_moduleDirectoriesByModuleName.count() << "names";
+    cDebug() << "Found" << m_availableDescriptorsByModuleName.count() << "modules"
+             << m_moduleDirectoriesByModuleName.count() << "names";
     emit initDone();
 }
 
@@ -167,7 +166,7 @@ findCustomInstance( const Settings::InstanceDescriptionList& customInstances, co
     for ( int i = 0; i < customInstances.count(); ++i )
     {
         const auto& thisInstance = customInstances[ i ];
-        if ( thisInstance.value( "module" ) == m.module() && thisInstance.value( "id" ) == m.id() )
+        if ( thisInstance.module == m.module() && thisInstance.id == m.id() )
         {
             return i;
         }
@@ -196,7 +195,7 @@ getConfigFileName( const Settings::InstanceDescriptionList& customInstances,
             return QString();
         }
 
-        return customInstances[ found ].value( "config" );
+        return customInstances[ found ].config;
     }
     else
     {