diff --git a/src/wxmac/src/base/wb_obj.cc b/src/wxmac/src/base/wb_obj.cc
index ee7eff191d..d8b67b93f3 100644
--- a/src/wxmac/src/base/wb_obj.cc
+++ b/src/wxmac/src/base/wb_obj.cc
@@ -49,6 +49,6 @@ wxObject::~wxObject(void)
 # ifdef COMPACT_BACKTRACE_GC
 char *wxObject::gcGetName()
 {
-  wxGetTypeName(__type);
+  return wxGetTypeName(__type);
 }
 # endif
diff --git a/src/wxxt/src/DataStructures/Object.cc b/src/wxxt/src/DataStructures/Object.cc
index d429525766..6f7459863a 100644
--- a/src/wxxt/src/DataStructures/Object.cc
+++ b/src/wxxt/src/DataStructures/Object.cc
@@ -30,6 +30,7 @@
 #define Uses_wxDebugStreamBuf
 #define Uses_wxObject
 #define Uses_wxHashTable
+#define Uses_wxTypeTree
 #include "wx.h"
 
 #include <stdarg.h>
@@ -72,3 +73,10 @@ long wxObject::MemoryUse(void)
   return 0;
 }
 #endif
+
+#ifdef COMPACT_BACKTRACE_GC
+char *wxObject::gcGetName()
+{
+  return wxGetTypeName(__type);
+}
+#endif