diff --git a/src/ChangeLog b/src/ChangeLog
index d836b2c0..bf68aa09 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2010-05-31  Giuseppe Scrivano  <gscrivano@gnu.org>
+
+	* sysdep.h (_SVID_SOURCE): Remove definition.
+	(_BSD_SOURCE): Remove definition.
+
 2010-05-31  Giuseppe Scrivano  <gscrivano@gnu.org>
 
 	* recur.c (retrieve_tree): Remove variable `up_error_code'.
diff --git a/src/sysdep.h b/src/sysdep.h
index 066ef864..3eeef069 100644
--- a/src/sysdep.h
+++ b/src/sysdep.h
@@ -70,20 +70,6 @@ as that of the covered work.  */
 /* Request the "Unix 98 compilation environment". */
 #define _XOPEN_SOURCE 500
 
-/* For Solaris: request everything else that is available and doesn't
-   conflict with the above.  */
-/* #define __EXTENSIONS__ */ /* XXX clashes with config.h */
-
-/* For Linux: request features of 4.3BSD and SVID (System V Interface
-   Definition). */
-#define _SVID_SOURCE
-#define _BSD_SOURCE
-
-/* Under glibc-based systems we want all GNU extensions as well.  This
-   declares some unnecessary cruft, but also useful functions such as
-   timegm, FNM_CASEFOLD extension to fnmatch, memrchr, etc.  */
-/* #define _GNU_SOURCE */ /* XXX clashes with config.h */
-
 #endif /* NAMESPACE_TWEAKS */