diff --git a/GITHUB_SHA.h b/GITHUB_SHA.h
index 98ed837..7548d9a 100644
--- a/GITHUB_SHA.h
+++ b/GITHUB_SHA.h
@@ -1 +1 @@
-#define GITHUB_SHA "ESP32-20211106-03:03"
+#define GITHUB_SHA "ESP32-20211107-00:09"
diff --git a/RingStream.cpp b/RingStream.cpp
index 0f91f78..1fa9ec6 100644
--- a/RingStream.cpp
+++ b/RingStream.cpp
@@ -31,7 +31,7 @@ RingStream::RingStream( const uint16_t len)
   _mark=0;
   _count=0; 
 #if defined(ARDUINO_ARCH_ESP32)
-  portMUX_TYPE _bufMux = portMUX_INITIALIZER_UNLOCKED;
+  _bufMux = portMUX_INITIALIZER_UNLOCKED;
 #endif
 }