Working machine

A working machine comprising:

• a prime mover;
• a traveling pump driven by power of the prime mover so as to deliver operation fluid;
• a traveling motor configured to be rotated by the operation fluid delivered from the traveling pump, the traveling motor having a rotation speed shiftable between a first speed and a second speed that is higher than the first speed;
• a machine body provided thereon with the prime mover, the traveling pump and the traveling motor;
• a traveling change-over valve shiftable between a first state where the rotation speed of the traveling motor is set to the first speed and a second state where the rotation speed of the traveling motor is set to the second speed;
• and
• a controller configured or programmed to perform a shock-mitigation control for reducing a rotation speed of the prime mover when the traveling change-over valve is shifted from the second state to the first state, wherein
• the controller is configured or programmed to determine a reduction amount of rotation speed of the prime mover reduced by the shock mitigation control based on a drop amount defined as a difference between a target rotation speed of the prime mover and an actual rotation speed of the prime mover.