diff --git a/src/plugins/qmljstools/qmljsmodelmanager.cpp b/src/plugins/qmljstools/qmljsmodelmanager.cpp
index 60f7566713b..d28cc3ab87e 100644
--- a/src/plugins/qmljstools/qmljsmodelmanager.cpp
+++ b/src/plugins/qmljstools/qmljsmodelmanager.cpp
@@ -106,6 +106,10 @@ ModelManagerInterface::ProjectInfo ModelManager::defaultProjectInfoForProject(
         if (BuildConfiguration *bc = activeTarget->activeBuildConfiguration()) {
             preferDebugDump = bc->buildType() == BuildConfiguration::Debug;
             setPreferDump = true;
+            // Append QML2_IMPORT_PATH if it is defined in build configuration.
+            // It enables qmlplugindump to correctly dump custom plugins or other dependent
+            // plugins that are not installed in default Qt qml installation directory.
+            projectInfo.qmlDumpEnvironment.appendOrSet("QML2_IMPORT_PATH", bc->environment().value("QML2_IMPORT_PATH"), ":");
         }
     }
     if (!setPreferDump && qtVersion)