diff --git a/src/gausskernel/optimizer/commands/tablecmds.cpp b/src/gausskernel/optimizer/commands/tablecmds.cpp
index 625705f6e633127a0cbe7b69f6f6454d92cb5cab..b3614345a346b3845249a5e9ca8457d3c98579c8 100644
--- a/src/gausskernel/optimizer/commands/tablecmds.cpp
+++ b/src/gausskernel/optimizer/commands/tablecmds.cpp
@@ -21438,7 +21438,7 @@ static Oid GetPartOidByATcmd(Relation rel, AlterTableCmd *cmd, const char *comma
     RangePartitionDefState *rangePartDef = (RangePartitionDefState*)cmd->def;
     switch (rel->partMap->type) {
         case PART_TYPE_RANGE:
-        case PART_AREA_INTERVAL:
+        case PART_TYPE_INTERVAL:
             rangePartDef->boundary = transformConstIntoTargetType(rel->rd_att->attrs,
                 ((RangePartitionMap*)rel->partMap)->partitionKey,
                 rangePartDef->boundary);
@@ -28656,4 +28656,4 @@ void CheckRelAutoIncrementIndex(Oid relid, LOCKMODE lockmode)
         ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
                 (errmsg("Incorrect table definition, auto_increment column must be defined as a key"))));
     }
-}
\ No newline at end of file
+}