diff --git a/test_zfsautobackup.py b/test_zfsautobackup.py
index e6a3e4f..341fb23 100644
--- a/test_zfsautobackup.py
+++ b/test_zfsautobackup.py
@@ -328,11 +328,10 @@ test_target1/fs2/sub@test-20101111000000
 
     def  test_clearrefres(self):
 
-        #on zfs utils 0.6.x this isnt supported, skip for now:
+        #on zfs utils 0.6.x -x isnt supported but returns 0 somehow
         r=shelltest("zfs recv -x bla test &>/dev/null; echo $?")
-        print("###### xoptiontestresult:"+r)
-        if r=="\n2\n":
-            pass
+        if r=="\n0\n":
+            self.skipTest("This zfs-userspace version doesnt support -x")
 
         r=shelltest("zfs set refreservation=1M test_source1/fs1")
 
@@ -368,10 +367,10 @@ test_target1/test_source2/fs2/sub@test-20101111000000  refreservation  -
 
     def  test_clearmount(self):
 
-        #on zfs utils 0.6.x this isnt supported, skip for now:
-        r=shelltest("zfs recv -o bla=1 test; echo $?")
-        if r=="\n2\n":
-            pass
+        #on zfs utils 0.6.x -o isnt supported but returns 0 somehow
+        r=shelltest("zfs recv -o bla=1 test &>/dev/null; echo $?")
+        if r=="\n0\n":
+            self.skipTest("This zfs-userspace version doesnt support -x")
 
 
         with patch('time.strftime', return_value="20101111000000"):