diff --git a/plugins/eclipse/src/org/jetbrains/idea/eclipse/conversion/EPathUtil.java b/plugins/eclipse/src/org/jetbrains/idea/eclipse/conversion/EPathUtil.java
index 6815556129b9..4c30592eb638 100644
--- a/plugins/eclipse/src/org/jetbrains/idea/eclipse/conversion/EPathUtil.java
+++ b/plugins/eclipse/src/org/jetbrains/idea/eclipse/conversion/EPathUtil.java
@@ -214,10 +214,11 @@ public class EPathUtil {
     final VirtualFile contentRoot = getContentRoot(model);
     VirtualFile file = VirtualFileManager.getInstance().findFileByUrl(url);
     if (file != null) {
+      LOG.assertTrue(file.isValid());
       if (file.getFileSystem() instanceof JarFileSystem) {
         file = JarFileSystem.getInstance().getVirtualFileForJar(file);
       }
-      LOG.assertTrue(file != null);
+      LOG.assertTrue(file != null, url);
       if (contentRoot != null && VfsUtil.isAncestor(contentRoot, file, false)) { //inside current project
         return VfsUtil.getRelativePath(file, contentRoot, '/');
       } else {