diff --git a/platform/lang-api/src/com/intellij/openapi/roots/libraries/LibraryUtil.java b/platform/lang-api/src/com/intellij/openapi/roots/libraries/LibraryUtil.java
index a384d7d6e6b2..e614dadde889 100644
--- a/platform/lang-api/src/com/intellij/openapi/roots/libraries/LibraryUtil.java
+++ b/platform/lang-api/src/com/intellij/openapi/roots/libraries/LibraryUtil.java
@@ -141,11 +141,11 @@ public class LibraryUtil {
   }
 
    @Nullable
-  public static LibraryOrderEntry findLibraryEntry(VirtualFile file, final Project project) {
+  public static OrderEntry findLibraryEntry(VirtualFile file, final Project project) {
     List<OrderEntry> entries = ProjectRootManager.getInstance(project).getFileIndex().getOrderEntriesForFile(file);
     for (OrderEntry entry : entries) {
-      if (entry instanceof LibraryOrderEntry) {
-        return (LibraryOrderEntry)entry;
+      if (entry instanceof LibraryOrderEntry || entry instanceof JdkOrderEntry) {
+        return entry;
       }
     }
     return null;
diff --git a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java
index e25651a9547f..e2e6742d52bc 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java
@@ -42,7 +42,7 @@ import com.intellij.openapi.components.ServiceManager;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.project.IndexNotReadyException;
 import com.intellij.openapi.project.Project;
-import com.intellij.openapi.roots.LibraryOrderEntry;
+import com.intellij.openapi.roots.OrderEntry;
 import com.intellij.openapi.roots.libraries.LibraryUtil;
 import com.intellij.openapi.roots.ui.configuration.ProjectSettingsService;
 import com.intellij.openapi.ui.popup.JBPopup;
@@ -800,7 +800,7 @@ public class DocumentationManager {
       final PsiFile containingFile = psiElement.getContainingFile();
       if (containingFile != null) {
         final VirtualFile virtualFile = containingFile.getVirtualFile();
-        final LibraryOrderEntry libraryEntry = LibraryUtil.findLibraryEntry(virtualFile, myProject);
+        final OrderEntry libraryEntry = LibraryUtil.findLibraryEntry(virtualFile, myProject);
         if (libraryEntry != null) {
           ProjectSettingsService.getInstance(myProject).openProjectLibrarySettings(new NamedLibraryElement(libraryEntry.getOwnerModule(), libraryEntry));
         }