diff --git a/SerialPort.cpp b/SerialPort.cpp
index bd936c6..dece371 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -250,7 +250,7 @@ uint8_t CSerialPort::setConfig(const uint8_t* data, uint8_t length)
   bool p25Enable    = (data[1U] & 0x08U) == 0x08U;
   bool nxdnEnable   = (data[1U] & 0x10U) == 0x10U;
   bool pocsagEnable = (data[1U] & 0x20U) == 0x20U;
-  bool m17Enable    = (data[1U] & 0x80U) == 0x80U;
+  bool m17Enable    = (data[1U] & 0x40U) == 0x40U;
 
   uint8_t txDelay = data[2U];
   if (txDelay > 50U)
diff --git a/version.h b/version.h
index 27fded5..80ec5e0 100644
--- a/version.h
+++ b/version.h
@@ -25,7 +25,7 @@
 #define VER_MAJOR       "1"
 #define VER_MINOR       "5"
 #define VER_REV         "1b"
-#define VERSION_DATE    "20201025"
+#define VERSION_DATE    "20201109"
 
 #if defined(ZUMSPOT_ADF7021)
 #define BOARD_INFO      "ZUMspot"