diff --git a/source/app.d b/source/app.d
index b69eac7..1a263b9 100644
--- a/source/app.d
+++ b/source/app.d
@@ -393,7 +393,11 @@ auto ref SetupColumn(TreeView tree, string sName, size_t index){
 	else{
 		cr.addOnEdited((string path, string newval, CellRendererText crt){
 			TreeIter t = new TreeIter(tree.getModel(), path);
-			store.setValue(t, cast(int)crt.getData("colnumber"), newval);
+			if(newval.countchars("\"")!=0){
+				SaySomething("Double quotes are forbidden !");
+			}
+			else
+				store.setValue(t, cast(int)crt.getData("colnumber"), newval);
 		});
 	}