diff --git a/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/LiveVariablesAnalyzer.java b/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/LiveVariablesAnalyzer.java
index c63195e079ab..0c559889e31d 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/LiveVariablesAnalyzer.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/LiveVariablesAnalyzer.java
@@ -148,7 +148,7 @@ public class LiveVariablesAnalyzer {
           set.or(liveVars);
           return set;
         } else {
-          result.put((FinishElementInstruction)instruction, liveVars);
+          result.put((FinishElementInstruction)instruction, (BitSet)liveVars.clone());
         }
       }