diff --git a/src/3d/qgsgoochmaterialsettings.cpp b/src/3d/qgsgoochmaterialsettings.cpp
index 9605e4f41bb..7320b52328c 100644
--- a/src/3d/qgsgoochmaterialsettings.cpp
+++ b/src/3d/qgsgoochmaterialsettings.cpp
@@ -71,6 +71,11 @@ void QgsGoochMaterialSettings::writeXml( QDomElement &elem, const QgsReadWriteCo
   elem.setAttribute( QStringLiteral( "beta" ), mBeta );
 }
 
+QMap<QString, QString> QgsGoochMaterialSettings::toExportParameters() const
+{
+  return QMap<QString, QString>();
+}
+
 Qt3DRender::QMaterial *QgsGoochMaterialSettings::toMaterial( QgsMaterialSettingsRenderingTechnique technique, const QgsMaterialContext &context ) const
 {
   switch ( technique )
diff --git a/src/3d/qgsgoochmaterialsettings.h b/src/3d/qgsgoochmaterialsettings.h
index 59f60e9aa96..faf086c8729 100644
--- a/src/3d/qgsgoochmaterialsettings.h
+++ b/src/3d/qgsgoochmaterialsettings.h
@@ -96,6 +96,8 @@ class _3D_EXPORT QgsGoochMaterialSettings : public QgsAbstractMaterialSettings
 
     void readXml( const QDomElement &elem, const QgsReadWriteContext &context ) override;
     void writeXml( QDomElement &elem, const QgsReadWriteContext &context ) const override;
+    QMap<QString, QString> toExportParameters() const override;
+
 #ifndef SIP_RUN
     Qt3DRender::QMaterial *toMaterial( QgsMaterialSettingsRenderingTechnique technique, const QgsMaterialContext &context ) const override;
     void addParametersToEffect( Qt3DRender::QEffect *effect ) const override;