A urinary catheter assembly to be arranged in a curled disposition is disclosed. The assembly comprises a urinary catheter having a tubular shaft extending between a insertable end and a discharge end, wherein said tubular shaft is provided with an elastic reinforcement element having an extension in the axial direction of the tubular shaft; and a receptacle arranged to accommodate and maintain the urinary catheter in a curled storage state, in which the tubular shaft of the catheter is arranged in at least one coil. The reinforcement element is arranged to provide a force to uncurl the catheter when removed from said receptacle.