diff --git a/platform/lang-impl/src/com/intellij/codeInsight/completion/impl/LiftShorterItemsClassifier.java b/platform/lang-impl/src/com/intellij/codeInsight/completion/impl/LiftShorterItemsClassifier.java
index 7b0d70952b95..84deb1b8a118 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/completion/impl/LiftShorterItemsClassifier.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/completion/impl/LiftShorterItemsClassifier.java
@@ -94,7 +94,10 @@ public class LiftShorterItemsClassifier extends Classifier<LookupElement> {
   }
 
   private void internListToLift(LookupElement longer) {
-    myToLift.put(longer, myListInterner.intern(myToLift.get(longer)));
+    final Collection<LookupElement> elements = myToLift.get(longer);
+    if (elements.size() > 10) return;
+    
+    myToLift.put(longer, myListInterner.intern(elements));
   }
 
   private void calculateToLift(LookupElement element) {