diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 512e85d149..a65d787fb1 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2018-06-29  Richard Bunt  richard.bunt@arm.com
+
+	* gdb.base/watchpoint-hw-attach.exp: Remove unstable output.
+
 2018-06-28  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	* lib/compiler.c: Remove executable permission flag.
diff --git a/gdb/testsuite/gdb.base/watchpoint-hw-attach.exp b/gdb/testsuite/gdb.base/watchpoint-hw-attach.exp
index ba7205d729..923045004f 100644
--- a/gdb/testsuite/gdb.base/watchpoint-hw-attach.exp
+++ b/gdb/testsuite/gdb.base/watchpoint-hw-attach.exp
@@ -55,7 +55,7 @@ if {$testpid == ""} {
 # logic to run post attach rather than post inferior launch.
 clean_restart $binfile
 
-gdb_test "attach $testpid" "Attaching to program: .*, process $testpid.*"
+gdb_test "attach $testpid" "Attaching to program: .*, process $testpid.*" "attach"
 
 # Ensure the test program is in the top frame so the required
 # variables are in scope.