diff --git a/src/modules/partition/gui/CreateVolumeGroupDialog.h b/src/modules/partition/gui/CreateVolumeGroupDialog.h
index b0d5b874c..02ca6410c 100644
--- a/src/modules/partition/gui/CreateVolumeGroupDialog.h
+++ b/src/modules/partition/gui/CreateVolumeGroupDialog.h
@@ -23,6 +23,7 @@
 
 class CreateVolumeGroupDialog : public VolumeGroupBaseDialog
 {
+    Q_OBJECT
 public:
     CreateVolumeGroupDialog( QString& vgName,
                              QVector< const Partition* >& selectedPVs,
diff --git a/src/modules/partition/gui/ResizeVolumeGroupDialog.h b/src/modules/partition/gui/ResizeVolumeGroupDialog.h
index 82231f885..bc088de4d 100644
--- a/src/modules/partition/gui/ResizeVolumeGroupDialog.h
+++ b/src/modules/partition/gui/ResizeVolumeGroupDialog.h
@@ -26,6 +26,7 @@ class LvmDevice;
 
 class ResizeVolumeGroupDialog : public VolumeGroupBaseDialog
 {
+    Q_OBJECT
 public:
     using PartitionVector = QVector< const Partition* >;
 
diff --git a/src/modules/tracking/TrackingJobs.h b/src/modules/tracking/TrackingJobs.h
index 7351c3346..813355591 100644
--- a/src/modules/tracking/TrackingJobs.h
+++ b/src/modules/tracking/TrackingJobs.h
@@ -25,6 +25,7 @@ class QSemaphore;
 
 class TrackingInstallJob : public Calamares::Job
 {
+    Q_OBJECT
 public:
     TrackingInstallJob( const QString& url );
     ~TrackingInstallJob() override;
diff --git a/src/modules/welcome/checker/ResultsListWidget.cpp b/src/modules/welcome/checker/ResultsListWidget.cpp
index e585d0300..f7442f721 100644
--- a/src/modules/welcome/checker/ResultsListWidget.cpp
+++ b/src/modules/welcome/checker/ResultsListWidget.cpp
@@ -87,6 +87,7 @@ createResultWidgets( QLayout* layout,
  */
 class ResultsListDialog : public QDialog
 {
+    Q_OBJECT
 public:
     /** @brief Create a dialog for the given @p checkEntries list of requirements.
      *
@@ -286,3 +287,5 @@ ResultsListWidget::retranslate()
                                     .arg( *Calamares::Branding::ProductName ) );
     }
 }
+
+#include "ResultsListWidget.moc"