diff --git a/src/kmailtransport/servertest.cpp b/src/kmailtransport/servertest.cpp
--- a/src/kmailtransport/servertest.cpp
+++ b/src/kmailtransport/servertest.cpp
@@ -721,7 +721,7 @@
 
 QList< ServerTest::Capability > ServerTest::capabilities() const
 {
-    return d->capabilityResults.toList();
+    return QList<ServerTest::Capability>(d->capabilityResults.cbegin(), d->capabilityResults.cend());
 }
 
 #include "moc_servertest.cpp"