diff --git a/sources/projectview.cpp b/sources/projectview.cpp
index 69735f1ca..7d0682c3b 100644
--- a/sources/projectview.cpp
+++ b/sources/projectview.cpp
@@ -103,8 +103,8 @@ void ProjectView::setProject(QETProject *project) {
 	if (!project_) {
 		project_ = project;
 		connect(project_, SIGNAL(projectTitleChanged(QETProject *, const QString &)), this, SLOT(updateWindowTitle()));
-		connect(project_, SIGNAL(readOnlyChanged    (QETProject *, bool)),            this, SLOT(updateWindowTitle()));
-		updateWindowTitle();
+		connect(project_, SIGNAL(readOnlyChanged    (QETProject *, bool)),            this, SLOT(adjustReadOnlyState()));
+		adjustReadOnlyState();
 		loadDiagrams();
 	}
 }
@@ -747,6 +747,18 @@ void ProjectView::updateWindowTitle() {
 	setWindowTitle(title);
 }
 
+/**
+	Effectue les actions necessaires lorsque le projet visualise entre ou sort
+	du mode lecture seule.
+*/
+void ProjectView::adjustReadOnlyState() {
+	// on empeche l'utilisateur de deplacer les onglets
+	tabs_ -> setMovable(!(project_ -> isReadOnly()));
+	
+	// on met a jour le titre du widget, qui reflete l'etat de lecture seule
+	updateWindowTitle();
+}
+
 /**
 	Met a jour le titre d'un onglet
 	@param diagram Schema
diff --git a/sources/projectview.h b/sources/projectview.h
index b36d70ef5..437166b6c 100644
--- a/sources/projectview.h
+++ b/sources/projectview.h
@@ -93,6 +93,7 @@ class ProjectView : public QWidget {
 	void firstTabInserted();
 	void lastTabRemoved();
 	void setDisplayFallbackWidget(bool);
+	void adjustReadOnlyState();
 	
 	// attributs
 	private: