diff --git a/tests/auto/corelib/io/qloggingregistry/tst_qloggingregistry.cpp b/tests/auto/corelib/io/qloggingregistry/tst_qloggingregistry.cpp
index 94e6bafa408..0fd62d40f62 100644
--- a/tests/auto/corelib/io/qloggingregistry/tst_qloggingregistry.cpp
+++ b/tests/auto/corelib/io/qloggingregistry/tst_qloggingregistry.cpp
@@ -193,6 +193,7 @@ private slots:
         QCOMPARE(qtDisabledByDefault.isDebugEnabled(), false);
 
         QLoggingRegistry &registry = *QLoggingRegistry::instance();
+        registry.initializeRules();
         QCOMPARE(registry.ruleSets[QLoggingRegistry::ApiRules].size(), 0);
         QCOMPARE(registry.ruleSets[QLoggingRegistry::ConfigRules].size(), 0);
         QCOMPARE(registry.ruleSets[QLoggingRegistry::EnvironmentRules].size(), 1);