diff --git a/platform/projectModel-impl/src/com/intellij/openapi/module/impl/ModuleManagerImpl.java b/platform/projectModel-impl/src/com/intellij/openapi/module/impl/ModuleManagerImpl.java
index dbd870d142a3..f70d47fd9ba2 100644
--- a/platform/projectModel-impl/src/com/intellij/openapi/module/impl/ModuleManagerImpl.java
+++ b/platform/projectModel-impl/src/com/intellij/openapi/module/impl/ModuleManagerImpl.java
@@ -261,7 +261,7 @@ public abstract class ModuleManagerImpl extends ModuleManager implements Disposa
     ExecutorService service = AppExecutorUtil.createBoundedApplicationPoolExecutor("modules loader", JobSchedulerImpl.CORES_COUNT);
     List<Pair<Future<Module>, ModulePath>> tasks = new ArrayList<>();
     Set<String> paths = new THashSet<>();
-    boolean parallel = Registry.is("parallel.modules.loading");
+    boolean parallel = Registry.is("parallel.modules.loading") && !ApplicationManager.getApplication().isDispatchThread();
     for (ModulePath modulePath : myModulePathsToLoad) {
       if (progressIndicator.isCanceled()) {
         break;