diff --git a/src/portab/portab.h b/src/portab/portab.h
index d1480589..ef376c80 100644
--- a/src/portab/portab.h
+++ b/src/portab/portab.h
@@ -8,7 +8,7 @@
  * (at your option) any later version.
  * Please read the file COPYING, README and AUTHORS for more information.
  *
- * $Id: portab.h,v 1.18 2005/03/19 18:43:50 fw Exp $
+ * $Id: portab.h,v 1.19 2005/03/30 16:37:02 alex Exp $
  *
  * Portability functions and declarations (header for libngbportab).
  */
@@ -20,6 +20,10 @@
 
 #include "config.h"
 
+#ifndef DEBUG
+# define NDEBUG
+#endif
+
 #ifdef HAVE_SYS_TYPES_H
 # include <sys/types.h>
 #endif