diff --git a/sources/elementslocation.cpp b/sources/elementslocation.cpp
index b5ca41432..45353bf64 100644
--- a/sources/elementslocation.cpp
+++ b/sources/elementslocation.cpp
@@ -18,6 +18,9 @@
 #include "elementslocation.h"
 #include "qetapp.h"
 
+// make this class usable with QVariant
+int ElementsLocation::MetaTypeId = qRegisterMetaType<ElementsLocation>("ElementsLocation");
+
 /**
 	Constructeur par defaut
 */
@@ -205,3 +208,11 @@ ElementsLocation ElementsLocation::locationFromString(const QString &string) {
 	location.fromString(string);
 	return(location);
 }
+
+/**
+	@param location A standard element location
+	@return a hash identifying this location
+*/
+uint qHash(const ElementsLocation &location) {
+	return(qHash(location.toString()));
+}
diff --git a/sources/elementslocation.h b/sources/elementslocation.h
index 99117b87b..4c0508fe9 100644
--- a/sources/elementslocation.h
+++ b/sources/elementslocation.h
@@ -17,6 +17,7 @@
 */
 #ifndef ELEMENTS_LOCATION_H
 #define ELEMENTS_LOCATION_H
+#include <QtCore>
 #include <QString>
 class QETProject;
 /**
@@ -52,5 +53,10 @@ class ElementsLocation {
 	private:
 	QString path_;
 	QETProject *project_;
+	
+	public:
+	static int MetaTypeId; ///< Id of the corresponding Qt meta type
 };
+Q_DECLARE_METATYPE(ElementsLocation)
+uint qHash(const ElementsLocation &);
 #endif
diff --git a/sources/titleblock/templatelocation.cpp b/sources/titleblock/templatelocation.cpp
index 04fc41034..348019313 100644
--- a/sources/titleblock/templatelocation.cpp
+++ b/sources/titleblock/templatelocation.cpp
@@ -20,7 +20,7 @@
 #include "qetapp.h"
 
 // make this class usable with QVariant
-int t = qRegisterMetaType<TitleBlockTemplateLocation>("TitleBlockTemplateLocation");
+int TitleBlockTemplateLocation::MetaTypeId = qRegisterMetaType<TitleBlockTemplateLocation>("TitleBlockTemplateLocation");
 
 /**
 	Constructor
@@ -162,3 +162,10 @@ bool TitleBlockTemplateLocation::operator==(const TitleBlockTemplateLocation &lo
 	return(location.collection_ == collection_ && location.name_ == name_);
 }
 
+/**
+	@param location A standard title block template location
+	@return a hash identifying this location
+*/
+uint qHash(const TitleBlockTemplateLocation &location) {
+	return(qHash(location.toString()));
+}
diff --git a/sources/titleblock/templatelocation.h b/sources/titleblock/templatelocation.h
index 952678395..3bb4b2194 100644
--- a/sources/titleblock/templatelocation.h
+++ b/sources/titleblock/templatelocation.h
@@ -60,4 +60,6 @@ class TitleBlockTemplateLocation {
 	public:
 	static int MetaTypeId; ///< Id of the corresponding Qt meta type
 };
+Q_DECLARE_METATYPE(TitleBlockTemplateLocation)
+uint qHash(const TitleBlockTemplateLocation &);
 #endif