diff --git a/ChangeLog b/ChangeLog
index f3622bb627..b3c1302937 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2009-04-09  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/unix/sysv/linux/preadv.c: Avoid prototype for static
+	function if it is not defined.
+	* sysdeps/unix/sysv/linux/pwritev.c: Likewise.
+
 	* sysdeps/unix/sysv/linux/kernel-features.h: SPARC and IA64 also
 	have preadv/pwritev in 2.6.30.
 
diff --git a/sysdeps/unix/sysv/linux/preadv.c b/sysdeps/unix/sysv/linux/preadv.c
index e2f8238596..ff9af6fa05 100644
--- a/sysdeps/unix/sysv/linux/preadv.c
+++ b/sysdeps/unix/sysv/linux/preadv.c
@@ -36,8 +36,10 @@
 # define OFF_T off_t
 #endif
 
+#ifndef __ASSUME_PREADV
 static ssize_t PREADV_REPLACEMENT (int, __const struct iovec *,
 				   int, OFF_T) internal_function;
+#endif
 
 
 ssize_t
diff --git a/sysdeps/unix/sysv/linux/pwritev.c b/sysdeps/unix/sysv/linux/pwritev.c
index df430ffe46..2031adda10 100644
--- a/sysdeps/unix/sysv/linux/pwritev.c
+++ b/sysdeps/unix/sysv/linux/pwritev.c
@@ -36,8 +36,10 @@
 # define OFF_T off_t
 #endif
 
+#ifndef __ASSUME_PWRITEV
 static ssize_t PWRITEV_REPLACEMENT (int, __const struct iovec *,
 				    int, OFF_T) internal_function;
+#endif
 
 
 ssize_t