diff --git a/sources/SearchAndReplace/searchandreplaceworker.cpp b/sources/SearchAndReplace/searchandreplaceworker.cpp
index 1d8266327..4974d71da 100644
--- a/sources/SearchAndReplace/searchandreplaceworker.cpp
+++ b/sources/SearchAndReplace/searchandreplaceworker.cpp
@@ -123,7 +123,8 @@ void SearchAndReplaceWorker::replaceElement(QList<Element *> list)
 			//We apply change only for master, slave, and terminal element.
 		if (elmt->linkType() == Element::Master ||
 			elmt->linkType() == Element::Simple ||
-			elmt->linkType() == Element::Terminale)
+			elmt->linkType() == Element::Terminale ||
+			elmt->linkType() == Element::Thumbnail)
 		{
 			DiagramContext old_context;
 			DiagramContext new_context =  old_context = elmt->elementInformations();
diff --git a/sources/dataBase/projectdatabase.cpp b/sources/dataBase/projectdatabase.cpp
index b0261be0f..360054e33 100644
--- a/sources/dataBase/projectdatabase.cpp
+++ b/sources/dataBase/projectdatabase.cpp
@@ -118,7 +118,7 @@ void projectDataBase::addElement(Element *element)
 	m_insert_elements_query.bindValue(":uuid", element->uuid().toString());
 	m_insert_elements_query.bindValue(":diagram_uuid", element->diagram()->uuid().toString());
 	m_insert_elements_query.bindValue(":pos", element->diagram()->convertPosition(element->scenePos()).toString());
-	m_insert_elements_query.bindValue(":type", element->linkTypeToString());
+	m_insert_elements_query.bindValue(":type", element->elementData().typeToString());
 	m_insert_elements_query.bindValue(":sub_type", element->kindInformations()["type"].toString());
 	if (!m_insert_elements_query.exec()) {
 		qDebug() << "projectDataBase::addElement insert element error : " << m_insert_elements_query.lastError();
@@ -440,7 +440,7 @@ void projectDataBase::populateElementInfoTable()
 	for (auto *diagram : m_project->diagrams())
 	{
 		ElementProvider ep(diagram);
-		QList<Element *> elements_list = ep.find(Element::Simple | Element::Terminale | Element::Master| Element::Thumbnail);
+		QList<Element *> elements_list = ep.find(Element::Simple | Element::Terminale | Element::Master | Element::Thumbnail);
 
 			//Insert all value into the database
 		for (auto elmt : elements_list)
diff --git a/sources/dataBase/ui/elementquerywidget.cpp b/sources/dataBase/ui/elementquerywidget.cpp
index be7678260..05973de22 100644
--- a/sources/dataBase/ui/elementquerywidget.cpp
+++ b/sources/dataBase/ui/elementquerywidget.cpp
@@ -45,7 +45,7 @@ ElementQueryWidget::ElementQueryWidget(QWidget *parent) :
 	m_button_group.addButton(ui->m_button_cb, 3);
 	m_button_group.addButton(ui->m_coil_cb, 4);
 	m_button_group.addButton(ui->m_protection_cb, 5);
-	m_button_group.addButton(ui->m_thumbnail_cb,6);
+	m_button_group.addButton(ui->m_thumbnail_cb, 6);
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)	// ### Qt 6: remove
 	connect(&m_button_group, static_cast<void (QButtonGroup::*)(int)>(&QButtonGroup::buttonClicked), [this](int id)
 #else
@@ -345,7 +345,7 @@ QString ElementQueryWidget::queryStr() const
 	}
 	if (ui->m_thumbnail_cb->isChecked()) {
 		if (b) where +=" OR";
-		where += " element_type = 'thumbnail'";
+		where += " element_type = 'Thumbnail'";
 		b = true;
 	}
 	if (ui->m_simple_cb->isChecked()) {
diff --git a/sources/editor/elementscene.cpp b/sources/editor/elementscene.cpp
index 59b00ac1d..2d8d7a302 100644
--- a/sources/editor/elementscene.cpp
+++ b/sources/editor/elementscene.cpp
@@ -467,14 +467,16 @@ const QDomDocument ElementScene::toXml(bool all_parts)
 	auto type_ = m_element_data.m_type;
 	if (type_ == ElementData::Slave  ||
 		type_ == ElementData::Master ||
-		type_ == ElementData::Terminale)
+		type_ == ElementData::Terminale ||
+		type_ == ElementData::Thumbnail)
 	{
 		root.appendChild(m_element_data.kindInfoToXml(xml_document));
 	}
 
 	if(type_ == ElementData::Simple ||
 	   type_ == ElementData::Master ||
-	   type_ == ElementData::Terminale)
+	   type_ == ElementData::Terminale||
+		type_ == ElementData::Thumbnail)
 	{
 		QDomElement element_info = xml_document.createElement("elementInformations");
 		m_element_data.m_informations.toXml(element_info, "elementInformation");
diff --git a/sources/properties/elementdata.cpp b/sources/properties/elementdata.cpp
index 682340e48..762bfb877 100644
--- a/sources/properties/elementdata.cpp
+++ b/sources/properties/elementdata.cpp
@@ -312,7 +312,7 @@ QString ElementData::typeToString(ElementData::Type type)
 		case ElementData::Terminale :
 			return QString("terminal");
 		case ElementData::Thumbnail:
-			return QString("thumbnail");
+			return  QStringLiteral("thumbnail");
 		default:
 			qDebug() << "ElementData::typeToString : type don't exist"
 					 << "return failsafe value 'simple'";
@@ -334,7 +334,7 @@ ElementData::Type ElementData::typeFromString(const QString &string)
 		return ElementData::Slave;
 	} else if (string == "terminal") {
 		return ElementData::Terminale;
-	} else if (string == "thumbnail") {
+	} else if (string == QLatin1String("thumbnail")) {
 		return ElementData::Thumbnail;
 	}
 
diff --git a/sources/qetgraphicsitem/dynamicelementtextitem.cpp b/sources/qetgraphicsitem/dynamicelementtextitem.cpp
index 328b8983c..81878b63f 100644
--- a/sources/qetgraphicsitem/dynamicelementtextitem.cpp
+++ b/sources/qetgraphicsitem/dynamicelementtextitem.cpp
@@ -270,6 +270,8 @@ Element *DynamicElementTextItem::elementUseForInfo() const
 	{
 		case Element::Simple:
 			return elmt;
+		case Element::Thumbnail:
+			return elmt;
 		case Element::NextReport:
 			return elmt;
 		case Element::PreviousReport:
diff --git a/sources/qetgraphicsitem/element.cpp b/sources/qetgraphicsitem/element.cpp
index d0177cdac..4c09aa1a2 100644
--- a/sources/qetgraphicsitem/element.cpp
+++ b/sources/qetgraphicsitem/element.cpp
@@ -1328,6 +1328,8 @@ QString Element::linkTypeToString() const
 			return QStringLiteral("Slave");
 		case Terminale:
 			return QStringLiteral("Terminale");
+		case Thumbnail:
+			return QStringLiteral("Thumbnail");
 		default:
 			return QStringLiteral("Unknown");
 	}