diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index 8c5fd0c674..40c37203f2 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-29	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* aclocal/prog-cc.m4: Remove non release-suitable warning flags.
+
 2010-09-01	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	PR 1696/networking:
diff --git a/cpukit/aclocal/prog-cc.m4 b/cpukit/aclocal/prog-cc.m4
index 6de5b33d57..e8b27b5ac0 100644
--- a/cpukit/aclocal/prog-cc.m4
+++ b/cpukit/aclocal/prog-cc.m4
@@ -29,7 +29,7 @@ test "$rtems_cv_gcc_pipe" = "yes" && CC="$CC --pipe"
 
 # Append warning flags if CFLAGS wasn't set.
 AS_IF([test "$GCC" = yes && test "$rtems_cv_CFLAGS_set" != set],
-[CFLAGS="$CFLAGS -Wall -Wimplicit-function-declaration -Wstrict-prototypes -Wnested-externs"])
+[CFLAGS="$CFLAGS -Wall"])
 
 RTEMS_CPPFLAGS="-I\$(top_builddir) -I\$(PROJECT_INCLUDE)"
 AC_SUBST(RTEMS_CPPFLAGS)