diff --git a/Common/Logger.cpp b/Common/Logger.cpp
index 936bf37..c64685b 100644
--- a/Common/Logger.cpp
+++ b/Common/Logger.cpp
@@ -18,7 +18,11 @@
 
 #include "Logger.h"
 
-static bool utc = false;
+#if defined(LOG_LOCALTIME) && LOG_LOCAL_TIME == 1
+static const bool utc = false;
+#else
+static const bool utc = true;
+#endif
 
 CLogger::CLogger(const wxString& directory, const wxString& name) :
 wxLog(),
diff --git a/Makefile.osx b/Makefile.osx
index ac25bae..66755cd 100644
--- a/Makefile.osx
+++ b/Makefile.osx
@@ -1,5 +1,5 @@
 export CXX     ?= $(shell wx-config --cxx)
-export CFLAGS  ?= -O2 -Wall $(shell wx-config --cxxflags)
+export CFLAGS  ?= -O2 -Wall $(shell wx-config --cxxflags) -DLOG_LOCALTIME=1
 export GUILIBS ?= $(shell wx-config --libs adv,core,base)
 export LIBS    ?= $(shell wx-config --libs base)
 export LDFLAGS ?=