diff --git a/platform/platform-api/src/com/intellij/util/ui/ButtonlessScrollBarUI.java b/platform/platform-api/src/com/intellij/util/ui/ButtonlessScrollBarUI.java
index 6018f627e7c4..f01c6915b8bf 100644
--- a/platform/platform-api/src/com/intellij/util/ui/ButtonlessScrollBarUI.java
+++ b/platform/platform-api/src/com/intellij/util/ui/ButtonlessScrollBarUI.java
@@ -437,6 +437,8 @@ public class ButtonlessScrollBarUI extends BasicScrollBarUI {
 
   @Override
   protected void installListeners() {
+    myDisposed = false;
+
     initRegularThumbAnimator();
     initMacScrollbarAnimators();