diff --git a/outform.h b/outform.h
index 6d535929..d2449a54 100644
--- a/outform.h
+++ b/outform.h
@@ -107,6 +107,9 @@
 #ifndef OF_MACHO
 #define OF_MACHO
 #endif
+#ifndef OF_DBG
+#define OF_DBG
+#endif
 #endif                          /* OF_ALL */
 
 /* turn on groups of formats specified.... */
@@ -204,6 +207,9 @@
 #ifdef OF_NO_MACHO
 #undef OF_MACHO
 #endif
+#ifdef OF_NO_DBG
+#undef OF_DBG
+#endif
 
 #ifndef OF_DEFAULT
 #define OF_DEFAULT of_bin