In this article the use of prepositions in combination with the infinitive in Old Swedish (OSw) and Early Modern Swedish (EMSw) is investigated. The preposition til ('to, at') is often used in combination with an infinitive clause containing the infinitive marker at in OSw and EMSw. Sometimes the infinitive marker is omitted and til alone is standing in front of the infinitive. The main goal of the article is to discuss whether, in such cases, til should be regarded as an infinitive marker or as a preposition. It has often been claimed that til in combination with a bare infinitive should be analyzed as an infinitive marker. The data for the analysis is taken from 40 OSw and EMSw texts containing more than 3300 infinitive clauses and it is ...