diff --git a/DCCEXParser.cpp b/DCCEXParser.cpp
index 34117eb..902326e 100644
--- a/DCCEXParser.cpp
+++ b/DCCEXParser.cpp
@@ -2,7 +2,7 @@
  *  © 2022 Paul M Antoine
  *  © 2021 Neil McKechnie
  *  © 2021 Mike S
- *  © 2021 Herb Morton
+ *  © 2021-2024 Herb Morton
  *  © 2020-2023 Harald Barth
  *  © 2020-2021 M Steve Todd
  *  © 2020-2021 Fred Decker
@@ -563,6 +563,7 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
 	    }
 #ifndef DISABLE_PROG
             else if (p[0]=="PROG"_hk) { // <0 PROG>
+          TrackManager::setJoin(false);
 	      TrackManager::progTrackBoosted=false;  // Prog track boost mode will not outlive prog track off
 	      TrackManager::setTrackPower(TRACK_MODE_PROG, POWERMODE::OFF);
             }
diff --git a/version.h b/version.h
index 78bf055..96d7fbf 100644
--- a/version.h
+++ b/version.h
@@ -3,7 +3,8 @@
 
 #include "StringFormatter.h"
 
-#define VERSION "5.2.63"
+#define VERSION "5.2.64"
+// 5.2.64 - Bugfix: <0 PROG> updated to undo JOIN
 // 5.2.63 - Implement WIFI_LED for ESP32, ESPduino32 and EX-CSB1, that is turned on when STA mode connects or AP mode is up
 //        - Add BOOSTER_INPUT definitions for ESPduino32 and EX-CSB1 to config.example.h
 //        - Add WIFI_LED definitions for ESPduino32 and EX-CSB1 to config.example.h