diff --git a/platform/util/src/com/intellij/util/ui/ThreeStateCheckBox.java b/platform/util/src/com/intellij/util/ui/ThreeStateCheckBox.java
index 37aedba6322c..49d763864bcf 100644
--- a/platform/util/src/com/intellij/util/ui/ThreeStateCheckBox.java
+++ b/platform/util/src/com/intellij/util/ui/ThreeStateCheckBox.java
@@ -26,7 +26,7 @@ public class ThreeStateCheckBox extends JCheckBox {
   private State myState;
   private boolean myThirdStateEnabled = true;
 
-  public static enum State {
+  public enum State {
     SELECTED, NOT_SELECTED, DONT_CARE
   }