diff --git a/tests/qemu-iotests/041 b/tests/qemu-iotests/041
index 8429958bf0a4d1c85a4f7120293da8da81712659..4d7a829b65314a82ad50fe96b57b23e370d6ab0d 100755
--- a/tests/qemu-iotests/041
+++ b/tests/qemu-iotests/041
@@ -1087,6 +1087,7 @@ class TestRepairQuorum(iotests.QMPTestCase):
         result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1',
                              snapshot_file=quorum_snapshot_file,
                              snapshot_node_name="snap1");
+        self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
                              sync='full', node_name='repair0', replaces="img1",
diff --git a/tests/qemu-iotests/151 b/tests/qemu-iotests/151
index b4d1bc2553f846a99c0401b2b1d80fe2229c96c6..668d0c1e9c41429309e440a6ee984724c1b0a821 100755
--- a/tests/qemu-iotests/151
+++ b/tests/qemu-iotests/151
@@ -159,6 +159,7 @@ class TestActiveMirror(iotests.QMPTestCase):
                              sync='full',
                              copy_mode='write-blocking',
                              speed=1)
+        self.assert_qmp(result, 'return', {})
 
         self.vm.hmp_qemu_io('source', 'break write_aio A')
         self.vm.hmp_qemu_io('source', 'aio_write 0 1M')  # 1
diff --git a/tests/qemu-iotests/152 b/tests/qemu-iotests/152
index 4e179c340ff340bc83d20dd78eb43e1e7df22115..b73a0d08a253b7b2a1657ae1718813b6afd7bf82 100755
--- a/tests/qemu-iotests/152
+++ b/tests/qemu-iotests/152
@@ -43,6 +43,7 @@ class TestUnaligned(iotests.QMPTestCase):
     def test_unaligned(self):
         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
                              granularity=65536, target=target_img)
+        self.assert_qmp(result, 'return', {})
         self.complete_and_wait()
         self.vm.shutdown()
         self.assertEqual(iotests.image_size(test_img), iotests.image_size(target_img),
@@ -51,6 +52,7 @@ class TestUnaligned(iotests.QMPTestCase):
     def test_unaligned_with_update(self):
         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
                              granularity=65536, target=target_img)
+        self.assert_qmp(result, 'return', {})
         self.wait_ready()
         self.vm.hmp_qemu_io('drive0', 'write 0 512')
         self.complete_and_wait(wait_ready=False)
diff --git a/tests/qemu-iotests/tests/migrate-bitmaps-test b/tests/qemu-iotests/tests/migrate-bitmaps-test
index 59f33575805c79a2ea24157fdb03362637a0cf76..8668caae1ec5f0b25c774437138a42e7910c166b 100755
--- a/tests/qemu-iotests/tests/migrate-bitmaps-test
+++ b/tests/qemu-iotests/tests/migrate-bitmaps-test
@@ -101,6 +101,7 @@ class TestDirtyBitmapMigration(iotests.QMPTestCase):
         sha256 = get_bitmap_hash(self.vm_a)
 
         result = self.vm_a.qmp('migrate', uri=mig_cmd)
+        self.assert_qmp(result, 'return', {})
         while True:
             event = self.vm_a.event_wait('MIGRATION')
             if event['data']['status'] == 'completed':
@@ -176,6 +177,7 @@ class TestDirtyBitmapMigration(iotests.QMPTestCase):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm_a.qmp('migrate', uri=mig_cmd)
+        self.assert_qmp(result, 'return', {})
         while True:
             event = self.vm_a.event_wait('MIGRATION')
             if event['data']['status'] == 'completed':