The present disclosure relates to a network device and methods for broadcasting a system information message that is associated with a time window. More particularly the disclosure pertains to ensuring reception of a SI message in a UE. In particular, the disclosure relates to a method, performed in a network node, for broadcasting a system information message that is associated with a time window 34. The method comprises detecting S1 that the system information, SI, message is of a predetermined message type, transmitting S2 the system information message in a first subframe 35a of the associated time window, and transmitting S3 the system information message in at least one second subframe 35b of the associated time window, in response to the detection that the system information message is of a predetermined message type.