diff --git a/include/wx/debug.h b/include/wx/debug.h
index 82f7bde0ac..06f302d820 100644
--- a/include/wx/debug.h
+++ b/include/wx/debug.h
@@ -49,9 +49,15 @@
 
 #ifndef __WXFUNCTION__
     /* TODO: add more compilers supporting __FUNCTION__ */
-    #if defined(__GNUC__) || \
-        (defined(_MSC_VER) && _MSC_VER >= 1300) || \
-        defined(__FUNCTION__)
+    #if defined(__DMC__)
+        /* 
+           __FUNCTION__ happens to be not defined within class members
+           http://www.digitalmars.com/drn-bin/wwwnews?c%2B%2B.beta/485
+        */
+        #define __WXFUNCTION__ (NULL)
+    #elif defined(__GNUC__) || \
+          (defined(_MSC_VER) && _MSC_VER >= 1300) || \
+          defined(__FUNCTION__)
         #define __WXFUNCTION__ __FUNCTION__
     #else
         /* still define __WXFUNCTION__ to avoid #ifdefs elsewhere */