diff --git a/LCS/Common/include/Common/LofarLogCout.h b/LCS/Common/include/Common/LofarLogCout.h
index 7a3d6c872ada6c9ac33a1ff8b940a662fbf9cf5e..26cf614571fd90af353420a7f1af459757ddad18 100644
--- a/LCS/Common/include/Common/LofarLogCout.h
+++ b/LCS/Common/include/Common/LofarLogCout.h
@@ -45,7 +45,7 @@
 //	- INIT_LOGGER_AND_WATCH
 //
 #define INIT_LOGGER(filename) \
-	::LOFAR::LFDebug::initLevels (::LOFAR::string(filename))
+	::LOFAR::LFDebug::initLevels (::LOFAR::string(filename) + ".debug")
 
 //# Note: 'watch' functionality not available
 #define INIT_LOGGER_AND_WATCH(filename,interval) \