diff --git a/scripts/SATA-hat.sh b/scripts/SATA-hat.sh
index 71822ca..abf44a2 100755
--- a/scripts/SATA-hat.sh
+++ b/scripts/SATA-hat.sh
@@ -44,7 +44,7 @@ enable_pwm_channel() {
 set_pwm() {
     enable_pwm_channel 1
     if [ "$1" = "clean" ]; then
-        echo 0 >$PWM_PATH/unexport
+        echo 1 >$PWM_PATH/unexport
     fi
 }