diff --git a/src/plugins/qmldesigner/designercore/instances/puppetcreator.cpp b/src/plugins/qmldesigner/designercore/instances/puppetcreator.cpp
index 943e21e6f7f..c82495437a5 100644
--- a/src/plugins/qmldesigner/designercore/instances/puppetcreator.cpp
+++ b/src/plugins/qmldesigner/designercore/instances/puppetcreator.cpp
@@ -514,7 +514,7 @@ QProcessEnvironment PuppetCreator::processEnvironment() const
 
         if (auto *rc = m_target->activeRunConfiguration()) {
             if (auto multiLanguageAspect = rc->aspect<QmlProjectManager::QmlMultiLanguageAspect>()) {
-                if (!multiLanguageAspect->databaseFilePath().isEmpty())
+                if (multiLanguageAspect->value() && !multiLanguageAspect->databaseFilePath().isEmpty())
                     environment.set("QT_MULTILANGUAGE_DATABASE", multiLanguageAspect->databaseFilePath().toString());
             }
         }