diff --git a/bochs/gui/beos.cc b/bochs/gui/beos.cc
index afd048206..aa26f2101 100644
--- a/bochs/gui/beos.cc
+++ b/bochs/gui/beos.cc
@@ -38,6 +38,8 @@
 // #include "icon_bochs.h"
 #include "font/vga.bitmap.h"
 
+#define LOG_THIS bx_gui.
+
 #define PAD_NEAREST(n, quantum) (( ((n) + ((quantum) - 1)) / (n) ) * (n))