diff --git a/src/mac/carbon/nonownedwnd.cpp b/src/mac/carbon/nonownedwnd.cpp
index 6f873b816b..c43ba0476f 100644
--- a/src/mac/carbon/nonownedwnd.cpp
+++ b/src/mac/carbon/nonownedwnd.cpp
@@ -34,7 +34,7 @@
 #define kWindowUnifiedTitleAndToolbarAttribute (1 << 7)
 
 // trace mask for activation tracing messages
-static const wxChar *TRACE_ACTIVATE = _T("activation");
+#define TRACE_ACTIVATE "activation"
 
 // ----------------------------------------------------------------------------
 // globals