diff --git a/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java b/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java
index 069d7fea3ee4..473ba1f617ad 100644
--- a/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java
+++ b/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java
@@ -647,7 +647,9 @@ public abstract class PlatformTestCase extends UsefulTestCase implements DataPro
         ourTestTime = DEFAULT_TEST_TIME;
         try {
           try {
+            myAssertionsInTestDetected = true;
             setUp();
+            myAssertionsInTestDetected = false;
           }
           catch (Throwable e) {
             try {