Louis Hjelmslev's presence in the history of phonology, usually deemed very marginal, can at least in part be re-evaluated under the light of little known references to the Dane linguist, which suggest that his early concern for suprasegmental units did not pass unnoticed by other phonologists. Among the phonologists in a way or another likely influenced by Hjelmslev, figure Firth who probably took from Hjelmslev the term 'prosody' and showed other similarities with his ideas, and several classic works on the nature and status of the syllable (Kuryłowicz, Hockett, Fudge); one of Greenberg's phonological universals is derived from Hjelmslev. John Anderson's 'structural analogy' owes much to Hjelmslev's thinking, and Malmberg was influenced by Hjelmslev in several respects too. Moreover, Hjelmslev anticipated some much recent proposals, in particular with regard to the suprasegmental domain.