diff --git a/core/trino-main/src/main/java/io/trino/cost/ComparisonStatsCalculator.java b/core/trino-main/src/main/java/io/trino/cost/ComparisonStatsCalculator.java
index b1e76561c888..fa7b7b1efa02 100644
--- a/core/trino-main/src/main/java/io/trino/cost/ComparisonStatsCalculator.java
+++ b/core/trino-main/src/main/java/io/trino/cost/ComparisonStatsCalculator.java
@@ -97,7 +97,7 @@ private static PlanNodeStatsEstimate estimateExpressionNotEqualToLiteral(
                     .setNullsFraction(0.0)
                     .setDistinctValuesCount(max(expressionStatistics.getDistinctValuesCount() - 1, 0))
                     .build();
-            estimate = estimate.addSymbolStatistics(expressionSymbol.get(), symbolNewEstimate);
+            estimate.addSymbolStatistics(expressionSymbol.get(), symbolNewEstimate);
         }
         return estimate.build();
     }