diff --git a/src/calamares/VariantModel.h b/src/calamares/VariantModel.h
index 3b0b594b7..9d3323145 100644
--- a/src/calamares/VariantModel.h
+++ b/src/calamares/VariantModel.h
@@ -30,6 +30,7 @@
  */
 class VariantModel : public QAbstractItemModel
 {
+    Q_OBJECT
 public:
     /** @brief Auxiliary data
      *
diff --git a/src/libcalamares/JobExample.h b/src/libcalamares/JobExample.h
index 5c527af6d..e3506fec1 100644
--- a/src/libcalamares/JobExample.h
+++ b/src/libcalamares/JobExample.h
@@ -23,6 +23,7 @@ namespace Calamares
  */
 class DLLEXPORT NamedJob : public Job
 {
+    Q_OBJECT
 public:
     explicit NamedJob( const QString& name, QObject* parent = nullptr )
         : Job( parent )
@@ -39,6 +40,7 @@ protected:
 /// @brief Job does nothing, always succeeds
 class DLLEXPORT GoodJob : public NamedJob
 {
+    Q_OBJECT
 public:
     explicit GoodJob( const QString& name, QObject* parent = nullptr )
         : NamedJob( name, parent )
@@ -52,6 +54,7 @@ public:
 /// @brief Job does nothing, always fails
 class DLLEXPORT FailJob : public NamedJob
 {
+    Q_OBJECT
 public:
     explicit FailJob( const QString& name, QObject* parent = nullptr )
         : NamedJob( name, parent )
diff --git a/src/libcalamares/JobQueue.cpp b/src/libcalamares/JobQueue.cpp
index a975c2c91..00b30f318 100644
--- a/src/libcalamares/JobQueue.cpp
+++ b/src/libcalamares/JobQueue.cpp
@@ -47,6 +47,7 @@ using WeightedJobList = QList< WeightedJob >;
 
 class JobThread : public QThread
 {
+    Q_OBJECT
 public:
     JobThread( JobQueue* queue )
         : QThread( queue )
@@ -288,3 +289,7 @@ JobQueue::globalStorage() const
 }
 
 }  // namespace Calamares
+
+#include "utils/moc-warnings.h"
+
+#include "JobQueue.moc"
diff --git a/src/modules/license/LicenseWidget.h b/src/modules/license/LicenseWidget.h
index 3f99163b9..eb7d8edd8 100644
--- a/src/modules/license/LicenseWidget.h
+++ b/src/modules/license/LicenseWidget.h
@@ -22,6 +22,7 @@ class QPushButton;
 
 class LicenseWidget : public QWidget
 {
+    Q_OBJECT
 public:
     LicenseWidget( LicenseEntry e, QWidget* parent = nullptr );
     ~LicenseWidget() override;