diff --git a/tests/test_unbind_inproc.cpp b/tests/test_unbind_inproc.cpp
index 104d8cb3..2b1d8982 100644
--- a/tests/test_unbind_inproc.cpp
+++ b/tests/test_unbind_inproc.cpp
@@ -33,6 +33,9 @@ int main (void)
     rc = zmq_unbind (sb, "inproc://a");
     assert (rc == 0);
 
+    rc = zmq_close (sb);
+    assert (rc == 0);
+
     rc = zmq_ctx_term (ctx);
     assert (rc == 0);
 
diff --git a/tests/test_unbind_wildcard.cpp b/tests/test_unbind_wildcard.cpp
index 1a4e72a0..dae1d423 100644
--- a/tests/test_unbind_wildcard.cpp
+++ b/tests/test_unbind_wildcard.cpp
@@ -38,6 +38,9 @@ int main (void)
     rc = zmq_unbind (sb, endpoint);
     assert (rc == 0);
 
+    rc = zmq_close (sb);
+    assert (rc == 0);
+
     rc = zmq_ctx_term (ctx);
     assert (rc == 0);