diff --git a/java/java-impl/src/com/intellij/ide/projectView/actions/MarkGeneratedSourceRootAction.java b/java/java-impl/src/com/intellij/ide/projectView/actions/MarkGeneratedSourceRootAction.java
index 2106f17dff36..59d36b88ce70 100644
--- a/java/java-impl/src/com/intellij/ide/projectView/actions/MarkGeneratedSourceRootAction.java
+++ b/java/java-impl/src/com/intellij/ide/projectView/actions/MarkGeneratedSourceRootAction.java
@@ -42,7 +42,7 @@ public class MarkGeneratedSourceRootAction extends MarkRootActionBase {
 
   @Override
   protected boolean isEnabled(@NotNull RootsSelection selection, @NotNull Module module) {
-    if (!(ModuleType.get(module) instanceof JavaModuleType)) return false;
+    if (!isJavaModule(module)) return false;
 
     if (selection.myHaveSelectedFilesUnderSourceRoots) {
       return false;
@@ -61,6 +61,12 @@ public class MarkGeneratedSourceRootAction extends MarkRootActionBase {
     return false;
   }
 
+  private static boolean isJavaModule(Module module) {
+    ModuleType moduleType = ModuleType.get(module);
+    //this additional check can be removed when we get rid of PluginModuleType
+    return moduleType instanceof JavaModuleType || moduleType != null && "PLUGIN_MODULE".equals(moduleType.getId());
+  }
+
   @Override
   protected void modifyRoots(VirtualFile vFile, ContentEntry entry) {
     JavaSourceRootProperties properties = JpsJavaExtensionService.getInstance().createSourceRootProperties("", true);