diff --git a/platform/lang-impl/src/com/intellij/find/impl/livePreview/LivePreview.java b/platform/lang-impl/src/com/intellij/find/impl/livePreview/LivePreview.java
index bf172257afb4..c20b5925721d 100644
--- a/platform/lang-impl/src/com/intellij/find/impl/livePreview/LivePreview.java
+++ b/platform/lang-impl/src/com/intellij/find/impl/livePreview/LivePreview.java
@@ -262,6 +262,7 @@ public class LivePreview extends DocumentAdapter implements SearchResults.Search
             @Override
             public void run() {
               for (FoldRegion region : allRegions) {
+                if (!region.isValid()) continue;
                 if (cursor.intersects(TextRange.create(region))) {
                   region.setExpanded(true);
                 }