diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/cache/RowBatchBuilder.java b/fe/fe-core/src/main/java/org/apache/doris/qe/cache/RowBatchBuilder.java
index 4f8b832dd6..ba7946eda2 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/cache/RowBatchBuilder.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/cache/RowBatchBuilder.java
@@ -159,7 +159,7 @@ public class RowBatchBuilder {
                 partitionRowList.add(row);
                 partRowMap.put(cacheKey.realValue(), partitionRowList);
             } else {
-                partRowMap.get(cacheKey).add(row);
+                partRowMap.get(cacheKey.realValue()).add(row);
             }
         }