diff --git a/python/core/auto_generated/processing/qgsprocessingparametermeshdataset.sip.in b/python/core/auto_generated/processing/qgsprocessingparametermeshdataset.sip.in
index 215c0764c82..c80d75f1a8c 100644
--- a/python/core/auto_generated/processing/qgsprocessingparametermeshdataset.sip.in
+++ b/python/core/auto_generated/processing/qgsprocessingparametermeshdataset.sip.in
@@ -55,6 +55,10 @@ Constructor
 
     virtual QStringList dependsOnOtherParameters() const;
 
+    virtual QVariantMap toVariantMap() const;
+
+    virtual bool fromVariantMap( const QVariantMap &map );
+
 
     static QString typeName();
 %Docstring
@@ -128,6 +132,10 @@ Constructor
 
     virtual QStringList dependsOnOtherParameters() const;
 
+    virtual QVariantMap toVariantMap() const;
+
+    virtual bool fromVariantMap( const QVariantMap &map );
+
 
     static QString typeName();
 %Docstring
diff --git a/src/core/processing/qgsprocessingparametermeshdataset.cpp b/src/core/processing/qgsprocessingparametermeshdataset.cpp
index f0768a34c1e..67e01d8c49a 100644
--- a/src/core/processing/qgsprocessingparametermeshdataset.cpp
+++ b/src/core/processing/qgsprocessingparametermeshdataset.cpp
@@ -26,7 +26,6 @@ QgsProcessingParameterMeshDatasetGroups::QgsProcessingParameterMeshDatasetGroups
   mMeshLayerParameterName( meshLayerParameterName ),
   mSupportedDataType( supportedDataType )
 {
-  int a = 1;
 }
 
 QgsProcessingParameterDefinition *QgsProcessingParameterMeshDatasetGroups::clone() const
@@ -147,7 +146,7 @@ QVariantMap QgsProcessingParameterMeshDatasetGroups::toVariantMap() const
   QVariantList dataType;
   for ( int v : mSupportedDataType )
     dataType.append( v );
-  map.insert( QStringLiteral( "suppoted_data_type" ), dataType );
+  map.insert( QStringLiteral( "supported_data_type" ), dataType );
   return map;
 }
 
@@ -155,7 +154,7 @@ bool QgsProcessingParameterMeshDatasetGroups::fromVariantMap( const QVariantMap
 {
   QgsProcessingParameterDefinition::fromVariantMap( map );
   mMeshLayerParameterName = map.value( QStringLiteral( "mesh_layer" ) ).toString();
-  const QVariantList dataType = map.value( QStringLiteral( "suppoted_data_type" ) ).toList();
+  const QVariantList dataType = map.value( QStringLiteral( "supported_data_type" ) ).toList();
   mSupportedDataType.clear();
   for ( const QVariant &var : dataType )
     mSupportedDataType.insert( var.toInt() );
diff --git a/src/gui/processing/qgsprocessingmeshdatasetwidget.cpp b/src/gui/processing/qgsprocessingmeshdatasetwidget.cpp
index 98172d26681..b37fe149034 100644
--- a/src/gui/processing/qgsprocessingmeshdatasetwidget.cpp
+++ b/src/gui/processing/qgsprocessingmeshdatasetwidget.cpp
@@ -383,7 +383,7 @@ void QgsProcessingMeshDatasetTimeWidgetWrapper::postInitialize( const QList<QgsA
 
 QgsProcessingAbstractParameterDefinitionWidget *QgsProcessingMeshDatasetTimeWidgetWrapper::createParameterDefinitionWidget( QgsProcessingContext &context, const QgsProcessingParameterWidgetContext &widgetContext, const QgsProcessingParameterDefinition *definition, const QgsProcessingAlgorithm *algorithm )
 {
-  return new QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget( context, widgetContext, definition, algorithm );
+  return new QgsProcessingMeshDatasetTimeParameterDefinitionWidget( context, widgetContext, definition, algorithm );
 }
 
 void QgsProcessingMeshDatasetTimeWidgetWrapper::setMeshLayerWrapperValue( const QgsAbstractProcessingParameterWidgetWrapper *wrapper )
@@ -805,10 +805,7 @@ QgsProcessingParameterDefinition *QgsProcessingMeshDatasetGroupsParameterDefinit
   return param.release();
 }
 
-
-///@endcond
-
-QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget::QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget(
+QgsProcessingMeshDatasetTimeParameterDefinitionWidget::QgsProcessingMeshDatasetTimeParameterDefinitionWidget(
   QgsProcessingContext &context,
   const QgsProcessingParameterWidgetContext &widgetContext,
   const QgsProcessingParameterDefinition *definition,
@@ -859,7 +856,7 @@ QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget::QgsProcessingMeshD
   setLayout( vlayout );
 }
 
-QgsProcessingParameterDefinition *QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget::createParameter( const QString &name, const QString &description, QgsProcessingParameterDefinition::Flags flags ) const
+QgsProcessingParameterDefinition *QgsProcessingMeshDatasetTimeParameterDefinitionWidget::createParameter( const QString &name, const QString &description, QgsProcessingParameterDefinition::Flags flags ) const
 {
   std::unique_ptr<QgsProcessingParameterMeshDatasetTime> param = std::make_unique<QgsProcessingParameterMeshDatasetTime>(
         name, description, mMeshLayerParameterName, mParentDatasetComboBox->currentData().toString() );
@@ -867,3 +864,6 @@ QgsProcessingParameterDefinition *QgsProcessingMeshDatasetDatasetTimeParameterDe
   param->setFlags( flags );
   return param.release();
 }
+
+///@endcond
+
diff --git a/src/gui/processing/qgsprocessingmeshdatasetwidget.h b/src/gui/processing/qgsprocessingmeshdatasetwidget.h
index ac5c6516868..c0b59d6ffbc 100644
--- a/src/gui/processing/qgsprocessingmeshdatasetwidget.h
+++ b/src/gui/processing/qgsprocessingmeshdatasetwidget.h
@@ -97,7 +97,6 @@ class GUI_EXPORT QgsProcessingMeshDatasetGroupsWidgetWrapper  : public QgsAbstra
 
   private:
     QgsProcessingMeshDatasetGroupsWidget *mWidget = nullptr;
-    std::unique_ptr<QgsMeshLayer> mTemporarytMeshLayer;
 
     friend class TestProcessingGui;
 };
@@ -202,10 +201,10 @@ class GUI_EXPORT QgsProcessingMeshDatasetTimeWidgetWrapper  : public QgsAbstract
     friend class TestProcessingGui;
 };
 
-class GUI_EXPORT QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget : public QgsProcessingAbstractParameterDefinitionWidget
+class GUI_EXPORT QgsProcessingMeshDatasetTimeParameterDefinitionWidget : public QgsProcessingAbstractParameterDefinitionWidget
 {
   public:
-    QgsProcessingMeshDatasetDatasetTimeParameterDefinitionWidget( QgsProcessingContext &context,
+    QgsProcessingMeshDatasetTimeParameterDefinitionWidget( QgsProcessingContext &context,
         const QgsProcessingParameterWidgetContext &widgetContext,
         const QgsProcessingParameterDefinition *definition = nullptr,
         const QgsProcessingAlgorithm *algorithm = nullptr, QWidget *parent SIP_TRANSFERTHIS = nullptr );
diff --git a/tests/src/gui/testprocessinggui.cpp b/tests/src/gui/testprocessinggui.cpp
index f84eca12d84..60fa1904203 100644
--- a/tests/src/gui/testprocessinggui.cpp
+++ b/tests/src/gui/testprocessinggui.cpp
@@ -10049,6 +10049,22 @@ void TestProcessingGui::testMeshDatasetWrapperLayerInProject()
   timeWrapper.setWidgetValue( QVariant::fromValue( QDateTime( QDate( 2020, 02, 01 ), QTime( 3, 2, 1 ) ) ).toString(), context );
   pythonString = timeDefinition.valueAsPythonString( timeWrapper.widgetValue(), context );
   QCOMPARE( pythonString, QStringLiteral( "{'type': 'defined-date-time','value': QDateTime(QDate(2020, 2, 1), QTime(3, 2, 1))}" ) );
+
+  // parameter definition widget
+  std::unique_ptr<QgsProcessingAbstractParameterDefinitionWidget> paramWidgetGroup( groupsWrapper.createParameterDefinitionWidget( context, widgetContext, &groupsDefinition, nullptr ) );
+  QgsProcessingParameterDefinition::Flags flags;
+  std::unique_ptr<QgsProcessingParameterDefinition> paramDefGroup( paramWidgetGroup->createParameter( QStringLiteral( "my_param_name" ), QStringLiteral( "my_param_descr" ), flags ) );
+  QVERIFY( paramDefGroup );
+  QCOMPARE( paramDefGroup->name(), QStringLiteral( "my_param_name" ) );
+  QCOMPARE( paramDefGroup->description(), QStringLiteral( "my_param_descr" ) );
+  QCOMPARE( paramDefGroup->type(), QgsProcessingParameterMeshDatasetGroups::typeName() );
+
+  std::unique_ptr<QgsProcessingAbstractParameterDefinitionWidget> paramWidgetTime( timeWrapper.createParameterDefinitionWidget( context, widgetContext, &timeDefinition, nullptr ) );
+  std::unique_ptr<QgsProcessingParameterDefinition> paramDefTime( paramWidgetTime->createParameter( QStringLiteral( "my_param_name" ), QStringLiteral( "my_param_descr" ), flags ) );
+  QVERIFY( paramDefTime );
+  QCOMPARE( paramDefTime->name(), QStringLiteral( "my_param_name" ) );
+  QCOMPARE( paramDefTime->description(), QStringLiteral( "my_param_descr" ) );
+  QCOMPARE( paramDefTime->type(), QgsProcessingParameterMeshDatasetTime::typeName() );
 }
 
 void TestProcessingGui::testMeshDatasetWrapperLayerOutsideProject()