The mosque was restored by the Comité de Conservation des Monuments de l'Art Arabe in 1895–1903.[11] Since then, however, it has suffered from neglect and progressive deterioration. Along with the usual accumulation of dust and grime from the desert environment of Cairo and urban pollution, the mosque has also suffered from humidity and water damage due to the rising water table and leaking sewage from the surrounding neighborhood.[12][13][14] The sanctuary (or prayer hall) is in particularly bad condition.