seed mismatch test
diff --git a/theta/test/theta_sketch_test.cpp b/theta/test/theta_sketch_test.cpp
index e6534f2..730b904 100644
--- a/theta/test/theta_sketch_test.cpp
+++ b/theta/test/theta_sketch_test.cpp
@@ -269,6 +269,9 @@
     REQUIRE(*it == entry);
     ++it;
   }
+
+  // seed mismatch
+  REQUIRE_THROWS_AS(wrapped_compact_theta_sketch::wrap(bytes.data(), bytes.size(), 0), std::invalid_argument);
 }
 
 } /* namespace datasketches */