diff --git a/tests/testlib/akonadifakedataxmlloader.cpp b/tests/testlib/akonadifakedataxmlloader.cpp
--- a/tests/testlib/akonadifakedataxmlloader.cpp
+++ b/tests/testlib/akonadifakedataxmlloader.cpp
@@ -90,9 +90,9 @@
             i.setId(itemId++);
             i.setParentCollection(c);
             i.setModificationTime(QDateTime::currentDateTime());
-            auto tags = Akonadi::Tag::List();
-            std::transform(i.tags().constBegin(), i.tags().constEnd(),
-                           std::back_inserter(tags),
+            auto tags = i.tags();
+            std::transform(tags.constBegin(), tags.constEnd(),
+                           tags.begin(),
                            [&tagByRid] (const Akonadi::Tag &tag) {
                                return tagByRid.value(tag.remoteId());
                            });
diff --git a/tests/units/akonadi/akonadidatasourcequeriestest.cpp b/tests/units/akonadi/akonadidatasourcequeriestest.cpp
--- a/tests/units/akonadi/akonadidatasourcequeriestest.cpp
+++ b/tests/units/akonadi/akonadidatasourcequeriestest.cpp
@@ -205,8 +205,9 @@
         QVERIFY(result->data().isEmpty());
         TestHelpers::waitForEmptyJobQueue();
 
+        const auto sources = result->data();
         auto actualNames = QStringList();
-        std::transform(result->data().constBegin(), result->data().constEnd(),
+        std::transform(sources.constBegin(), sources.constEnd(),
                        std::back_inserter(actualNames),
                        [] (const Domain::DataSource::Ptr &source) { return source->name(); });
         actualNames.sort();
@@ -437,8 +438,9 @@
         QVERIFY(result->data().isEmpty());
         TestHelpers::waitForEmptyJobQueue();
 
+        const auto sources = result->data();
         auto actualNames = QStringList();
-        std::transform(result->data().constBegin(), result->data().constEnd(),
+        std::transform(sources.constBegin(), sources.constEnd(),
                        std::back_inserter(actualNames),
                        [] (const Domain::DataSource::Ptr &source) { return source->name(); });
         actualNames.sort();
@@ -703,8 +705,9 @@
         QVERIFY(result->data().isEmpty());
         TestHelpers::waitForEmptyJobQueue();
 
+        auto sources = result->data();
         auto actualNames = QStringList();
-        std::transform(result->data().constBegin(), result->data().constEnd(),
+        std::transform(sources.constBegin(), sources.constEnd(),
                        std::back_inserter(actualNames),
                        [] (const Domain::DataSource::Ptr &source) { return source->name(); });
         actualNames.sort();
@@ -720,8 +723,9 @@
         // THEN
         TestHelpers::waitForEmptyJobQueue();
 
+        sources = result->data();
         actualNames.clear();
-        std::transform(result->data().constBegin(), result->data().constEnd(),
+        std::transform(sources.constBegin(), sources.constEnd(),
                        std::back_inserter(actualNames),
                        [] (const Domain::DataSource::Ptr &source) { return source->name(); });
         actualNames.sort();
@@ -973,8 +977,9 @@
         QVERIFY(result->data().isEmpty());
         TestHelpers::waitForEmptyJobQueue();
 
+        auto sources = result->data();
         auto actualNames = QStringList();
-        std::transform(result->data().constBegin(), result->data().constEnd(),
+        std::transform(sources.constBegin(), sources.constEnd(),
                        std::back_inserter(actualNames),
                        [] (const Domain::DataSource::Ptr &source) { return source->name(); });
         actualNames.sort();
@@ -990,8 +995,9 @@
         // THEN
         TestHelpers::waitForEmptyJobQueue();
 
+        sources = result->data();
         actualNames.clear();
-        std::transform(result->data().constBegin(), result->data().constEnd(),
+        std::transform(sources.constBegin(), sources.constEnd(),
                        std::back_inserter(actualNames),
                        [] (const Domain::DataSource::Ptr &source) { return source->name(); });
         actualNames.sort();