diff --git a/platform/lang-impl/src/com/intellij/ide/actions/CreateFileAction.java b/platform/lang-impl/src/com/intellij/ide/actions/CreateFileAction.java
index 6d26841c94f8..35902ab3a850 100644
--- a/platform/lang-impl/src/com/intellij/ide/actions/CreateFileAction.java
+++ b/platform/lang-impl/src/com/intellij/ide/actions/CreateFileAction.java
@@ -34,7 +34,6 @@ import com.intellij.openapi.util.io.FileUtilRt;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VfsUtil;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.openapi.vfs.newvfs.impl.FakeVirtualFile;
 import com.intellij.psi.PsiDirectory;
 import com.intellij.psi.PsiElement;
 import com.intellij.util.IncorrectOperationException;
@@ -235,8 +234,7 @@ public class CreateFileAction extends CreateElementActionBase implements DumbAwa
       DumbService.allowStartingDumbModeInside(DumbModePermission.MAY_START_BACKGROUND, new Runnable() {
         @Override
         public void run() {
-          final FileType type = FileTypeChooser.getKnownFileTypeOrAssociate(new FakeVirtualFile(psiDirectory.getVirtualFile(), getFileName(inputString)),
-                                                                            project);
+          final FileType type = FileTypeChooser.getKnownFileTypeOrAssociate(psiDirectory.getVirtualFile(), getFileName(inputString), project);
           result[0] = type != null && MyValidator.super.canClose(getFileName(inputString));
         }
       });
diff --git a/platform/lang-impl/src/com/intellij/refactoring/copy/CopyFilesOrDirectoriesDialog.java b/platform/lang-impl/src/com/intellij/refactoring/copy/CopyFilesOrDirectoriesDialog.java
index 76bb9f495b44..046371409be3 100644
--- a/platform/lang-impl/src/com/intellij/refactoring/copy/CopyFilesOrDirectoriesDialog.java
+++ b/platform/lang-impl/src/com/intellij/refactoring/copy/CopyFilesOrDirectoriesDialog.java
@@ -26,6 +26,7 @@ import com.intellij.openapi.command.CommandProcessor;
 import com.intellij.openapi.fileChooser.FileChooserDescriptor;
 import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory;
 import com.intellij.openapi.fileTypes.FileType;
+import com.intellij.openapi.fileTypes.ex.FileTypeChooser;
 import com.intellij.openapi.help.HelpManager;
 import com.intellij.openapi.keymap.KeymapUtil;
 import com.intellij.openapi.project.Project;
@@ -51,6 +52,7 @@ import com.intellij.util.PathUtilRt;
 import com.intellij.util.ui.FormBuilder;
 import com.intellij.util.ui.UIUtil;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 import javax.swing.event.DocumentEvent;
@@ -91,7 +93,7 @@ public class CopyFilesOrDirectoriesDialog extends DialogWrapper {
   private PsiDirectory myTargetDirectory;
   private boolean myFileCopy = false;
 
-  public CopyFilesOrDirectoriesDialog(PsiElement[] elements, PsiDirectory defaultTargetDirectory, Project project, boolean doClone) {
+  public CopyFilesOrDirectoriesDialog(PsiElement[] elements, @Nullable PsiDirectory defaultTargetDirectory, Project project, boolean doClone) {
     super(project, true);
     myElements = elements;
     myProject = project;
@@ -122,6 +124,7 @@ public class CopyFilesOrDirectoriesDialog extends DialogWrapper {
           myNewNameField.select(0, dotIdx);
           myNewNameField.putClientProperty(DialogWrapperPeer.HAVE_INITIAL_SELECTION, true);
         }
+        myTargetDirectory = file.getContainingDirectory();
         myFileCopy = true;
       }
       else {
@@ -265,6 +268,10 @@ public class CopyFilesOrDirectoriesDialog extends DialogWrapper {
         Messages.showErrorDialog(myNewNameField, "Name is not a valid file name");
         return;
       }
+
+      if (myFileCopy && FileTypeChooser.getKnownFileTypeOrAssociate(myTargetDirectory.getVirtualFile(), newName, myProject) == null) {
+        return;
+      }
     }
 
     saveOpenInEditorState(myOpenFilesInEditor.isSelected());
diff --git a/platform/platform-impl/src/com/intellij/openapi/fileTypes/ex/FileTypeChooser.java b/platform/platform-impl/src/com/intellij/openapi/fileTypes/ex/FileTypeChooser.java
index 91d50d80b69a..ba49434fa5f8 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileTypes/ex/FileTypeChooser.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileTypes/ex/FileTypeChooser.java
@@ -149,6 +149,14 @@ public class FileTypeChooser extends DialogWrapper {
     return type;
   }
 
+  /**
+   * Speculates if file with newName would have known file type
+   */
+  @Nullable
+  public static FileType getKnownFileTypeOrAssociate(@NotNull VirtualFile parent, @NotNull String newName, @Nullable Project project) {
+    return getKnownFileTypeOrAssociate(new FakeVirtualFile(parent, newName), project);
+  }
+
   @Nullable
   public static FileType getKnownFileTypeOrAssociate(@NotNull String fileName) {
     FileTypeManager fileTypeManager = FileTypeManager.getInstance();