diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index bfc0e9d2e1b3..4cecf2e8c9c3 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2011-03-08  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+
+	* gcc.dg/optimize-bswapsi-1.c: Use -march=z900 on s390.
+
 2011-03-08  Jason Merrill  <jason@redhat.com>
 
 	* g++.dg/template/nontype21.C: New.
diff --git a/gcc/testsuite/gcc.dg/optimize-bswapsi-1.c b/gcc/testsuite/gcc.dg/optimize-bswapsi-1.c
index 35f53ba76cf9..78238e309558 100644
--- a/gcc/testsuite/gcc.dg/optimize-bswapsi-1.c
+++ b/gcc/testsuite/gcc.dg/optimize-bswapsi-1.c
@@ -1,6 +1,7 @@
 /* { dg-do compile { target arm*-*-* alpha*-*-* i?86-*-* powerpc*-*-* rs6000-*-* x86_64-*-* s390*-*-* } } */
 /* { dg-require-effective-target stdint_types } */
 /* { dg-options "-O2 -fdump-tree-bswap" } */
+/* { dg-options "-O2 -fdump-tree-bswap -march=z900" { target s390-*-* } } */
 
 #include <stdint.h>