diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h
index 346cf08936..7cae3fcfb5 100644
--- a/src/include/nodes/relation.h
+++ b/src/include/nodes/relation.h
@@ -204,7 +204,7 @@ typedef struct PlannerInfo
RangeTblEntry **simple_rte_array; /* rangetable as an array */
/*
- * append_rel_list is the same length as the above arrays, and holds
+ * append_rel_array is the same length as the above arrays, and holds
* pointers to the corresponding AppendRelInfo entry indexed by
* child_relid, or NULL if none. The array itself is not allocated if
* append_rel_list is empty.