diff --git a/source/drivers/CalliopeSoundMotor.cpp b/source/drivers/CalliopeSoundMotor.cpp
index 47cb2217..493b2807 100644
--- a/source/drivers/CalliopeSoundMotor.cpp
+++ b/source/drivers/CalliopeSoundMotor.cpp
@@ -393,7 +393,7 @@ void CalliopeSoundMotor::motorBOn(uint8_t duty_percent)
     motor_AB_current_use |= 0x02;
 
     //values for duty cycle 0
-    if(uint8_t(duty_motor_B_percent/2) == 0 || (motor_AB_current_use == 0x02)) {
+    if(uint8_t(duty_motor_A_percent/2) == 0 || (motor_AB_current_use == 0x02)) {
         nrf_gpio_pin_clear(CALLIOPE_PIN_MOTOR_IN1);
         nrf_gpio_pin_clear(CALLIOPE_PIN_MOTOR_IN2);
     }
@@ -659,4 +659,4 @@ void CalliopeSoundMotor::systemTick()
 {
     //currently not in use
 }
-#endif
\ No newline at end of file
+#endif