diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 04b7e1e66cb9..304a016397ff 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2011-08-26  Jakub Jelinek  <jakub@redhat.com>
 
+	* gcc.target/i386/cmpxchg16b-1.c: Match also space after the
+	instruction.
+
 	PR c/50179
 	* c-c++-common/Wunused-var-14.c: New test.
 
diff --git a/gcc/testsuite/gcc.target/i386/cmpxchg16b-1.c b/gcc/testsuite/gcc.target/i386/cmpxchg16b-1.c
index a78017aa2c55..e3402014e523 100644
--- a/gcc/testsuite/gcc.target/i386/cmpxchg16b-1.c
+++ b/gcc/testsuite/gcc.target/i386/cmpxchg16b-1.c
@@ -10,4 +10,4 @@ void test(TItype x_128)
   m_128 = __sync_val_compare_and_swap (&m_128, x_128, m_128);
 }
 
-/* { dg-final { scan-assembler "cmpxchg16b" } } */
+/* { dg-final { scan-assembler "cmpxchg16b\[ \\t]" } } */