diff --git a/platform/platform-api/src/com/intellij/ide/wizard/AbstractWizard.java b/platform/platform-api/src/com/intellij/ide/wizard/AbstractWizard.java
index a8df6e491e2c..35a1489f2503 100644
--- a/platform/platform-api/src/com/intellij/ide/wizard/AbstractWizard.java
+++ b/platform/platform-api/src/com/intellij/ide/wizard/AbstractWizard.java
@@ -478,7 +478,7 @@ public abstract class AbstractWizard<T extends Step> extends DialogWrapper {
   }
 
   public void updateWizardButtons() {
-    if (!mySteps.isEmpty())
+    if (!mySteps.isEmpty() && getRootPane() != null)
       updateButtons();
   }