diff --git a/HARDWARE/PID.c b/HARDWARE/PID.c
index 9334848..4e5614c 100644
--- a/HARDWARE/PID.c
+++ b/HARDWARE/PID.c
@@ -226,7 +226,7 @@ void PID_Calc() // pid calc
 			float t_out = pid.set_tem - pid.out_tem; // 7
 			float t_in = pid.set_tem - pid.now_tem; // 1.1
 			float hp_base = -0.003125 * t_out * t_out + 0.1875 * t_out;
-			pid.hp = (6 - hp_base) / 3 * t_in + hp_base;
+			pid.hp = (6 - hp_base) / 2 * t_in + hp_base;
 			if (pid.hp < 0) {
 				pid.hp = 0;
 			}