diff --git a/modules/seq/alg/tests/test_aligntoseqres.py b/modules/seq/alg/tests/test_aligntoseqres.py
index 0f4b8ceaa9bdbdf61bec7a390127b6ebc6687f89..6c390008e69d81d2613337a863503769b6da1872 100644
--- a/modules/seq/alg/tests/test_aligntoseqres.py
+++ b/modules/seq/alg/tests/test_aligntoseqres.py
@@ -68,5 +68,9 @@ class TestAlignToSeqRes(unittest.TestCase):
     self.assertEqual(seq.alg.ValidateSEQRESAlignment(seqres_aln, chain), False)
 
 if __name__ == "__main__":
-  from ost import testutils
-  testutils.RunTests()
+  builder=conop.GetBuilder()
+  if not hasattr(builder, 'compound_lib'):
+    print 'default builder does not use compound library. ignoring unit tests'
+  else:
+    from ost import testutils
+    testutils.RunTests()