diff --git a/DCCACK.cpp b/DCCACK.cpp
index 1b339ee..8a074b4 100644
--- a/DCCACK.cpp
+++ b/DCCACK.cpp
@@ -351,7 +351,7 @@ void DCCACK::callback(int value) {
 
     switch (callbackState) {
       case AFTER_READ:
-         if (ackManagerRejoin && autoPowerOff) {
+         if (ackManagerRejoin && !autoPowerOff) {
                 progDriver->setPower(POWERMODE::OFF);
                 callbackStart=millis();
                 callbackState=WAITING_30;