Embodiments herein relate to the field of lysosomal storage disorders, and, more specifically, to methods of treating lysosomal storage disorders such as Niemann-Pick type C disease, for instance with inhibitors of histone deacetylases, particularly inhibitors of class 1 histone deacetylases. In various embodiments, methods of treating Niemann-Pick type C disease with inhibitors of class 1 histone deacetylases are described.