diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/JsLibraryStdDetectionUtil.java b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/JsLibraryStdDetectionUtil.java
index 4699d5c3c51..672d41e7384 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/JsLibraryStdDetectionUtil.java
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/JsLibraryStdDetectionUtil.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2010-2016 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.
@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.idea.framework;
 
 import com.intellij.openapi.roots.OrderRootType;
+import com.intellij.openapi.roots.impl.libraries.LibraryEx;
 import com.intellij.openapi.roots.libraries.Library;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.util.io.JarUtil;
@@ -41,6 +42,8 @@ public class JsLibraryStdDetectionUtil {
     }
 
     public static boolean hasJsStdlibJar(@NotNull Library library) {
+        if (library instanceof LibraryEx && ((LibraryEx) library).isDisposed()) return false;
+
         if (!KotlinJavaScriptLibraryDetectionUtil.isKotlinJavaScriptLibrary(library)) return false;
 
         List<VirtualFile> classes = Arrays.asList(library.getFiles(OrderRootType.CLASSES));
diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/KotlinJavaScriptLibraryDetectionUtil.kt b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/KotlinJavaScriptLibraryDetectionUtil.kt
index b908289a807..928198ee358 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/KotlinJavaScriptLibraryDetectionUtil.kt
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/framework/KotlinJavaScriptLibraryDetectionUtil.kt
@@ -1,6 +1,6 @@
 
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2010-2016 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.
@@ -18,8 +18,8 @@
 package org.jetbrains.kotlin.idea.framework
 
 import com.intellij.openapi.roots.OrderRootType
+import com.intellij.openapi.roots.impl.libraries.LibraryEx
 import com.intellij.openapi.roots.libraries.Library
-import com.intellij.openapi.util.Key
 import com.intellij.openapi.vfs.VfsUtilCore
 import com.intellij.openapi.vfs.VirtualFile
 import org.jetbrains.kotlin.idea.caches.JarUserDataManager
@@ -27,8 +27,11 @@ import org.jetbrains.kotlin.js.JavaScript
 import org.jetbrains.kotlin.utils.KotlinJavascriptMetadataUtils
 
 object KotlinJavaScriptLibraryDetectionUtil {
-    @JvmStatic fun isKotlinJavaScriptLibrary(library: Library): Boolean =
-            isKotlinJavaScriptLibrary(library.getFiles(OrderRootType.CLASSES).toList())
+    @JvmStatic fun isKotlinJavaScriptLibrary(library: Library): Boolean {
+        if (library is LibraryEx && library.isDisposed) return false
+
+        return isKotlinJavaScriptLibrary(library.getFiles(OrderRootType.CLASSES).toList())
+    }
 
     @JvmStatic fun isKotlinJavaScriptLibrary(classesRoots: List<VirtualFile>): Boolean {
         // Prevent clashing with java runtime