An urgent need for a relatively large number of qualified Putonghua language teachers in Hong Kong has led the Open University of Hong Kong to establish a distance education programme for in-service language teachers, most of whom are non-native speakers. The programme designed by the university involves distance study coupled with regular face-to-face tutorials, and is designed to enable the in-service teachers to apply their learned knowledge directly in their daily teaching. The article explains how evaluation of the first presentation of the course in 1996 showed that the course alone could not fully address the actual deficiencies in the teachers' Putonghua listening and speaking skills while, additionally, there was also a need to restructure the teaching methodology component of the course. The basis upon which these judgements were made is explained, and the steps taken to strengthen the course to meet these perceived deficiencies, while not adding to the students' workload, are outlined. [Copyright of Open Learning is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/026805100115434]