diff --git a/plugins/copyright/src/com/maddyhome/idea/copyright/actions/UpdateCopyrightCheckinHandlerFactory.java b/plugins/copyright/src/com/maddyhome/idea/copyright/actions/UpdateCopyrightCheckinHandlerFactory.java
index b493f673dc64..b96650221323 100644
--- a/plugins/copyright/src/com/maddyhome/idea/copyright/actions/UpdateCopyrightCheckinHandlerFactory.java
+++ b/plugins/copyright/src/com/maddyhome/idea/copyright/actions/UpdateCopyrightCheckinHandlerFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2015 JetBrains s.r.o.
+ * Copyright 2000-2016 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,8 @@
 package com.maddyhome.idea.copyright.actions;
 
 import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.roots.GeneratedSourcesFilter;
 import com.intellij.openapi.vcs.CheckinProjectPanel;
 import com.intellij.openapi.vcs.changes.CommitContext;
 import com.intellij.openapi.vcs.changes.CommitExecutor;
@@ -32,6 +34,7 @@ import com.intellij.psi.PsiFile;
 import com.intellij.psi.PsiManager;
 import com.intellij.psi.util.PsiUtilCore;
 import com.intellij.util.PairConsumer;
+import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.ui.JBUI;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -42,7 +45,7 @@ import java.util.Collection;
 import java.util.List;
 
 
-public class UpdateCopyrightCheckinHandlerFactory extends CheckinHandlerFactory  {
+public class UpdateCopyrightCheckinHandlerFactory extends CheckinHandlerFactory {
   @NotNull
   public CheckinHandler createHandler(@NotNull final CheckinProjectPanel panel, @NotNull CommitContext commitContext) {
     return new CheckinHandler() {
@@ -77,13 +80,13 @@ public class UpdateCopyrightCheckinHandlerFactory extends CheckinHandlerFactory
       }
 
       private PsiFile[] getPsiFiles() {
+        Project project = panel.getProject();
         final Collection<VirtualFile> files = panel.getVirtualFiles();
         final List<PsiFile> psiFiles = new ArrayList<PsiFile>();
-        final PsiManager manager = PsiManager.getInstance(panel.getProject());
+        final PsiManager manager = PsiManager.getInstance(project);
         for (final VirtualFile file : files) {
-          final PsiFile psiFile = manager.findFile(file);
-          if (psiFile != null) {
-            psiFiles.add(psiFile);
+          if (!GeneratedSourcesFilter.isGeneratedSourceByAnyFilter(file, project)) {
+            ContainerUtil.addIfNotNull(manager.findFile(file), psiFiles);
           }
         }
         return PsiUtilCore.toPsiFileArray(psiFiles);