diff --git a/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java b/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java
index 379fd96f3f12..195fb7537d1b 100644
--- a/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java
+++ b/platform/testFramework/src/com/intellij/testFramework/fixtures/impl/CodeInsightTestFixtureImpl.java
@@ -889,7 +889,9 @@ public class CodeInsightTestFixtureImpl extends BaseFixture implements CodeInsig
     }
     final VirtualFile vFile;
     if (myTempDirFixture instanceof LightTempDirTestFixtureImpl) {
-      vFile = LightPlatformTestCase.getSourceRoot().findOrCreateChildData(this, "aaa." + extension);
+      final VirtualFile root = LightPlatformTestCase.getSourceRoot();
+      root.refresh(false, false);
+      vFile = root.findOrCreateChildData(this, "aaa." + extension);
     }
     else{
       final File tempFile = File.createTempFile("aaa", "." + extension, new File(getTempDirPath()));