Mucopolysaccharidosis type-I is caused by a deficiency of the lysosomal enzyme α-L-iduronidase, resulting in gradual deposition of glycosaminoglycans in multiple body organs, affecting physical appearance and system functioning. We present the first reported case associating MPS-I (Hurler-Scheie subtype) with craniosynostosis. A 2.5-year-old girl presented initially with macrocrania. On clinical and radiological examinations we noted a scaphocephaly with dysmorphic facial features of MPS confirmed later on. Intracranial hypertension was documented at fundoscopy (papilloedema) and ICP monitoring, and then surgically treated. This association of scaphocephaly and MPS-I highlights the importance of a meticulous physical examination performed by craniofacial, metabolic and ophthalmologic teams.