diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 9ae655c9c628..51777a203f13 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-05-03  Richard Guenther  <rguenther@suse.de>
+
+	* gfortran.dg/pr52621.f90: Add -w to avoid diagnostic about
+	unsupported prefetching support.
+
 2012-05-03  Greta Yorsh  <Greta.Yorsh@arm.com>
 
        * gcc.dg/fixed-point/composite-type.c (dg-options): Add
diff --git a/gcc/testsuite/gfortran.dg/pr52621.f90 b/gcc/testsuite/gfortran.dg/pr52621.f90
index d305e4db9b62..b45d3edc97d0 100644
--- a/gcc/testsuite/gfortran.dg/pr52621.f90
+++ b/gcc/testsuite/gfortran.dg/pr52621.f90
@@ -1,5 +1,5 @@
 ! { dg-do compile }
-! { dg-options "-O2 -fprefetch-loop-arrays" }
+! { dg-options "-O2 -fprefetch-loop-arrays -w" }
 
       SUBROUTINE GHDSYM(IZ,IS,LMMAX,S,LMS,Y,L2M,DRL,NLAY2,K0,DCUT)!,
 !