diff --git a/src/plugins/qbsprojectmanager/qbsbuildstep.cpp b/src/plugins/qbsprojectmanager/qbsbuildstep.cpp
index 9c20578393ed902ab6ef5bb045e8b07b120936a4..fddbade83b0ab79fdca5c3fbf77baec936429193 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildstep.cpp
+++ b/src/plugins/qbsprojectmanager/qbsbuildstep.cpp
@@ -62,6 +62,42 @@ static const char QBS_CLEAN_INSTALL_ROOT[] = "Qbs.CleanInstallRoot";
 namespace QbsProjectManager {
 namespace Internal {
 
+class QbsBuildStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
+{
+    Q_OBJECT
+public:
+    QbsBuildStepConfigWidget(QbsBuildStep *step);
+    ~QbsBuildStepConfigWidget();
+    QString summaryText() const;
+    QString displayName() const;
+
+private:
+    void updateState();
+    void updateQmlDebuggingOption();
+    void updatePropertyEdit(const QVariantMap &data);
+
+    void changeBuildVariant(int);
+    void changeShowCommandLines(bool show);
+    void changeKeepGoing(bool kg);
+    void changeJobCount(int count);
+    void changeInstall(bool install);
+    void changeCleanInstallRoot(bool clean);
+    void changeForceProbes(bool forceProbes);
+    void applyCachedProperties();
+
+    // QML debugging:
+    void linkQmlDebuggingLibraryChecked(bool checked);
+
+    bool validateProperties(Utils::FancyLineEdit *edit, QString *errorMessage);
+
+    Ui::QbsBuildStepConfigWidget *m_ui;
+
+    QList<QPair<QString, QString> > m_propertyCache;
+    QbsBuildStep *m_step;
+    QString m_summary;
+    bool m_ignoreChange;
+};
+
 // --------------------------------------------------------------------
 // QbsBuildStep:
 // --------------------------------------------------------------------
@@ -752,3 +788,5 @@ ProjectExplorer::BuildStep *QbsBuildStepFactory::clone(ProjectExplorer::BuildSte
 
 } // namespace Internal
 } // namespace QbsProjectManager
+
+#include "qbsbuildstep.moc"
diff --git a/src/plugins/qbsprojectmanager/qbsbuildstep.h b/src/plugins/qbsprojectmanager/qbsbuildstep.h
index 5264b2fa35b6c99f3c4cd7a96622b06742bafe18..365507ac4f9bc7a788d9b3dc1b7b40d71ceb2047 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildstep.h
+++ b/src/plugins/qbsprojectmanager/qbsbuildstep.h
@@ -125,44 +125,6 @@ private:
     friend class QbsBuildStepConfigWidget;
 };
 
-namespace Ui { class QbsBuildStepConfigWidget; }
-
-class QbsBuildStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
-{
-    Q_OBJECT
-public:
-    QbsBuildStepConfigWidget(QbsBuildStep *step);
-    ~QbsBuildStepConfigWidget();
-    QString summaryText() const;
-    QString displayName() const;
-
-private:
-    void updateState();
-    void updateQmlDebuggingOption();
-    void updatePropertyEdit(const QVariantMap &data);
-
-    void changeBuildVariant(int);
-    void changeShowCommandLines(bool show);
-    void changeKeepGoing(bool kg);
-    void changeJobCount(int count);
-    void changeInstall(bool install);
-    void changeCleanInstallRoot(bool clean);
-    void changeForceProbes(bool forceProbes);
-    void applyCachedProperties();
-
-    // QML debugging:
-    void linkQmlDebuggingLibraryChecked(bool checked);
-
-    bool validateProperties(Utils::FancyLineEdit *edit, QString *errorMessage);
-
-    Ui::QbsBuildStepConfigWidget *m_ui;
-
-    QList<QPair<QString, QString> > m_propertyCache;
-    QbsBuildStep *m_step;
-    QString m_summary;
-    bool m_ignoreChange;
-};
-
 class QbsBuildStepFactory : public ProjectExplorer::IBuildStepFactory
 {
     Q_OBJECT