The paper deals with the doubling of the verb laa 'let' in the dialect of the city of Zug. The data are collected by means of written questionnaires. The results of this inquiry are compared with the results gained by the project SADS ('Syntactic Atlas of German-speaking Switzerland'). This comparison clearly shows differences in the results according to the elicitation techniques. It also shows that there is a greater variation with regard to the laa-doubling than illustrated by the SADS project. This variation seems to at least correlate with the age of the informants.