Index: sources/storage/Logger.h
===================================================================
diff -u -r3a528c6f3fce8132de2791b55d3227e715d68898 -r627b97843f87f5ca8fbd731c6c4a6d9fae4352ce
--- sources/storage/Logger.h	(.../Logger.h)	(revision 3a528c6f3fce8132de2791b55d3227e715d68898)
+++ sources/storage/Logger.h	(.../Logger.h)	(revision 627b97843f87f5ca8fbd731c6c4a6d9fae4352ce)
@@ -38,8 +38,6 @@
 
 #define MIXED_EVENT_DATUM
 
-#undef DISABLE_ACKNOW_CHECKIN_MESSAGE_LOG
-
 // forward declarations
 class tst_logging;