diff --git a/src/abstract_client.cpp b/src/abstract_client.cpp
index 3ef9321980..2000152e99 100644
--- a/src/abstract_client.cpp
+++ b/src/abstract_client.cpp
@@ -3747,3 +3747,5 @@ bool AbstractClient::wantsShadowToBeRendered() const
 }
 
 }
+
+#include "moc_abstract_client.cpp"
diff --git a/src/kcmkwin/kwindecoration/declarative-plugin/previewbutton.cpp b/src/kcmkwin/kwindecoration/declarative-plugin/previewbutton.cpp
index 27c0364ec2..1f76207b37 100644
--- a/src/kcmkwin/kwindecoration/declarative-plugin/previewbutton.cpp
+++ b/src/kcmkwin/kwindecoration/declarative-plugin/previewbutton.cpp
@@ -133,3 +133,5 @@ void PreviewButtonItem::setColor(const QColor &color)
 
 }
 }
+
+#include "moc_previewbutton.cpp"
diff --git a/src/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp b/src/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp
index d5c848cdb7..1a3e4b8913 100644
--- a/src/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp
+++ b/src/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp
@@ -455,3 +455,5 @@ SETTER2(setProvidesContextHelp, providesContextHelp)
 
 } // namespace Preview
 } // namespace KDecoration2
+
+#include "moc_previewclient.cpp"
diff --git a/src/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp b/src/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp
index ddd8dfc25d..4a39231dce 100644
--- a/src/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp
+++ b/src/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp
@@ -453,3 +453,5 @@ DecorationShadow *PreviewItem::shadow() const
 
 }
 }
+
+#include "moc_previewitem.cpp"
diff --git a/src/kcmkwin/kwindecoration/kcm.cpp b/src/kcmkwin/kwindecoration/kcm.cpp
index 854cca2f37..cf03c15fca 100644
--- a/src/kcmkwin/kwindecoration/kcm.cpp
+++ b/src/kcmkwin/kwindecoration/kcm.cpp
@@ -260,3 +260,4 @@ QString KCMKWinDecoration::borderSizeIndexToString(int index) const
 }
 
 #include "kcm.moc"
+#include "moc_kcm.cpp"
diff --git a/src/kcmkwin/kwindesktop/virtualdesktops.cpp b/src/kcmkwin/kwindesktop/virtualdesktops.cpp
index cd5b02a0b6..7c5131e803 100644
--- a/src/kcmkwin/kwindesktop/virtualdesktops.cpp
+++ b/src/kcmkwin/kwindesktop/virtualdesktops.cpp
@@ -165,3 +165,4 @@ bool VirtualDesktops::isSaveNeeded() const
 }
 
 #include "virtualdesktops.moc"
+#include "moc_virtualdesktops.cpp"
diff --git a/src/kcmkwin/kwinvirtualkeyboard/kcmvirtualkeyboard.cpp b/src/kcmkwin/kwinvirtualkeyboard/kcmvirtualkeyboard.cpp
index e1ddbac76b..77f293dcc7 100644
--- a/src/kcmkwin/kwinvirtualkeyboard/kcmvirtualkeyboard.cpp
+++ b/src/kcmkwin/kwinvirtualkeyboard/kcmvirtualkeyboard.cpp
@@ -100,3 +100,4 @@ int VirtualKeyboardsModel::rowCount(const QModelIndex &parent) const
 }
 
 #include "kcmvirtualkeyboard.moc"
+#include "moc_kcmvirtualkeyboard.cpp"
diff --git a/src/libkwineffects/kwineffects.cpp b/src/libkwineffects/kwineffects.cpp
index a038ffa1c2..b21ff118b6 100644
--- a/src/libkwineffects/kwineffects.cpp
+++ b/src/libkwineffects/kwineffects.cpp
@@ -20,6 +20,7 @@
 #include <QPainter>
 #include <QPixmap>
 #include <QtMath>
+#include <QWindow>
 
 #include <ksharedconfig.h>
 #include <kconfiggroup.h>
@@ -1767,3 +1768,4 @@ TimeLine &TimeLine::operator=(const TimeLine &other)
 } // namespace
 
 #include "moc_kwinglobals.cpp"
+#include "moc_kwineffects.cpp"
diff --git a/src/plugins/kdecorations/aurorae/src/aurorae.cpp b/src/plugins/kdecorations/aurorae/src/aurorae.cpp
index 00d8bba4a3..9c78bb6bd1 100644
--- a/src/plugins/kdecorations/aurorae/src/aurorae.cpp
+++ b/src/plugins/kdecorations/aurorae/src/aurorae.cpp
@@ -790,3 +790,4 @@ void ConfigurationModule::initQml()
 }
 
 #include "aurorae.moc"
+#include "moc_aurorae.cpp"
diff --git a/src/scripting/dbuscall.h b/src/scripting/dbuscall.h
index c2fcb26722..0c48e207b3 100644
--- a/src/scripting/dbuscall.h
+++ b/src/scripting/dbuscall.h
@@ -11,6 +11,7 @@
 
 #include <QObject>
 #include <QString>
+#include <QVariant>
 
 namespace KWin
 {
diff --git a/src/scripting/desktopbackgrounditem.cpp b/src/scripting/desktopbackgrounditem.cpp
index de9715ec5c..32885c46a4 100644
--- a/src/scripting/desktopbackgrounditem.cpp
+++ b/src/scripting/desktopbackgrounditem.cpp
@@ -115,3 +115,5 @@ void DesktopBackgroundItem::updateWindow()
 }
 
 } // namespace KWin
+
+#include "moc_desktopbackgrounditem.cpp"
diff --git a/src/scripting/v3/clientmodel.h b/src/scripting/v3/clientmodel.h
index ccb0e4b0f2..daf376e1d5 100644
--- a/src/scripting/v3/clientmodel.h
+++ b/src/scripting/v3/clientmodel.h
@@ -6,6 +6,8 @@
 
 #pragma once
 
+#include "virtualdesktops.h"
+
 #include <QAbstractListModel>
 #include <QPointer>
 #include <QSortFilterProxyModel>
@@ -16,7 +18,6 @@ namespace KWin
 {
 class AbstractClient;
 class AbstractOutput;
-class VirtualDesktop;
 
 namespace ScriptingModels::V3
 {
diff --git a/src/scripting/workspace_wrapper.cpp b/src/scripting/workspace_wrapper.cpp
index 9544fa3981..014e1015c3 100644
--- a/src/scripting/workspace_wrapper.cpp
+++ b/src/scripting/workspace_wrapper.cpp
@@ -421,3 +421,5 @@ DeclarativeScriptWorkspaceWrapper::DeclarativeScriptWorkspaceWrapper(QObject* pa
     : WorkspaceWrapper(parent) {}
 
 } // KWin
+
+#include "moc_workspace_wrapper.cpp"
diff --git a/src/toplevel.cpp b/src/toplevel.cpp
index 7119a4fa1f..2db55ee308 100644
--- a/src/toplevel.cpp
+++ b/src/toplevel.cpp
@@ -721,3 +721,4 @@ bool Toplevel::isOnCurrentDesktop() const
 
 } // namespace
 
+#include "moc_toplevel.cpp"