diff --git a/tests/test_xpath_api.cpp b/tests/test_xpath_api.cpp
index 7abf7d9..8687e35 100644
--- a/tests/test_xpath_api.cpp
+++ b/tests/test_xpath_api.cpp
@@ -123,7 +123,7 @@ TEST_XML(xpath_api_nodeset_copy, "<node><foo/><foo/></node>")
 
 	xpath_node_set copy3;
 	copy3 = set;
-	copy3 = copy3;
+	copy3 = xpath_node_set(copy3);
 	CHECK(copy3.size() == 2);
 	CHECK_STRING(copy3[0].node().name(), STR("foo"));
 
diff --git a/tests/test_xpath_variables.cpp b/tests/test_xpath_variables.cpp
index 8a65e3c..3d2147c 100644
--- a/tests/test_xpath_variables.cpp
+++ b/tests/test_xpath_variables.cpp
@@ -454,7 +454,7 @@ TEST_XML(xpath_variables_copy, "<node />")
 
 	CHECK_XPATH_STRING_VAR(xml_node(), STR("substring($c, count($d[$a]) + $b)"), &set2, STR("ring"));
 
-	set3 = set3;
+	set3 = xpath_variable_set(set3);
 
 	CHECK_XPATH_STRING_VAR(xml_node(), STR("substring($c, count($d[$a]) + $b)"), &set2, STR("ring"));