diff --git a/ChangeLog b/ChangeLog
index 0c977c467..1c3b4de41 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2008-03-06  Dalibor Topic  <robilad@kaffe.org>
+
+	* kaffe/kaffevm/systems/unix-pthreads/Makefile.am (libkthread_la_CFLAGS): 
+	Define _GNU_SOURCE.
+
+	* kaffe/kaffevm/systems/unix-pthreads/signal.c,
+	kaffe/kaffevm/systems/unix-pthreads/thread-impl.c: Removed
+	the _GNU_SOURCE define.
+
 2008-03-01  Dalibor Topic  <robilad@kaffe.org>
 
 	* TODO: Updated.
diff --git a/kaffe/kaffevm/systems/unix-pthreads/Makefile.am b/kaffe/kaffevm/systems/unix-pthreads/Makefile.am
index 0afbbfb25..9cf6792d2 100644
--- a/kaffe/kaffevm/systems/unix-pthreads/Makefile.am
+++ b/kaffe/kaffevm/systems/unix-pthreads/Makefile.am
@@ -19,7 +19,8 @@ libkthread_la_LDFLAGS = \
 
 libkthread_la_CFLAGS = \
 	$(AM_CFLAGS) \
-	$(PTHREAD_CFLAGS)
+	$(PTHREAD_CFLAGS) \
+	-D_GNU_SOURCE
 
 libkthread_la_SOURCES = \
 	lock-impl.c \
diff --git a/kaffe/kaffevm/systems/unix-pthreads/Makefile.in b/kaffe/kaffevm/systems/unix-pthreads/Makefile.in
index 01982c402..7d345987b 100644
--- a/kaffe/kaffevm/systems/unix-pthreads/Makefile.in
+++ b/kaffe/kaffevm/systems/unix-pthreads/Makefile.in
@@ -302,7 +302,8 @@ libkthread_la_LDFLAGS = \
 
 libkthread_la_CFLAGS = \
 	$(AM_CFLAGS) \
-	$(PTHREAD_CFLAGS)
+	$(PTHREAD_CFLAGS) \
+	-D_GNU_SOURCE
 
 libkthread_la_SOURCES = \
 	lock-impl.c \
diff --git a/kaffe/kaffevm/systems/unix-pthreads/signal.c b/kaffe/kaffevm/systems/unix-pthreads/signal.c
index cfff35411..3852d4f25 100644
--- a/kaffe/kaffevm/systems/unix-pthreads/signal.c
+++ b/kaffe/kaffevm/systems/unix-pthreads/signal.c
@@ -9,7 +9,6 @@
  * of this file. 
  */
 
-#define _GNU_SOURCE
 #include "config.h"
 #include "debug.h"
 #include "config-std.h"
diff --git a/kaffe/kaffevm/systems/unix-pthreads/thread-impl.c b/kaffe/kaffevm/systems/unix-pthreads/thread-impl.c
index ac5156cda..ae73d654a 100644
--- a/kaffe/kaffevm/systems/unix-pthreads/thread-impl.c
+++ b/kaffe/kaffevm/systems/unix-pthreads/thread-impl.c
@@ -47,10 +47,6 @@
 #include <gc/gc.h>
 #endif
 
-/* define _GNU_SOURCE for pthread_yield on linux */
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
 #include <pthread.h>
 
 #if !defined(HAVE_PTHREAD_YIELD) && defined(HAVE_SCHED_YIELD)