diff --git a/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/test/ExternalSystemTestCase.java b/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/test/ExternalSystemTestCase.java
index 31d282afc691..94fbb9c3b953 100644
--- a/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/test/ExternalSystemTestCase.java
+++ b/platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/test/ExternalSystemTestCase.java
@@ -492,9 +492,10 @@ public abstract class ExternalSystemTestCase extends UsefulTestCase {
 
   protected void assertArtifactOutput(String artifactName, TestFileSystemItem fs) {
     final Artifact artifact = ArtifactsTestUtil.findArtifact(myProject, artifactName);
-    final VirtualFile outputFile = artifact.getOutputFile();
+    final String outputFile = artifact.getOutputFilePath();
     assert outputFile != null;
-    final File file = VfsUtilCore.virtualToIoFile(outputFile);
+    final File file = new File(outputFile);
+    assert file.exists();
     fs.assertFileEqual(file);
   }