diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 60f21711f4..1f406ca9b2 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -1891,7 +1891,7 @@ find_partition_scheme(PlannerInfo *root, Relation relation)
 				   sizeof(Oid) * partnatts) != 0 ||
 			memcmp(partkey->partopcintype, part_scheme->partopcintype,
 				   sizeof(Oid) * partnatts) != 0 ||
-			memcmp(partkey->parttypcoll, part_scheme->parttypcoll,
+			memcmp(partkey->partcollation, part_scheme->partcollation,
 				   sizeof(Oid) * partnatts) != 0)
 			continue;
 
@@ -1926,8 +1926,8 @@ find_partition_scheme(PlannerInfo *root, Relation relation)
 	memcpy(part_scheme->partopcintype, partkey->partopcintype,
 		   sizeof(Oid) * partnatts);
 
-	part_scheme->parttypcoll = (Oid *) palloc(sizeof(Oid) * partnatts);
-	memcpy(part_scheme->parttypcoll, partkey->parttypcoll,
+	part_scheme->partcollation = (Oid *) palloc(sizeof(Oid) * partnatts);
+	memcpy(part_scheme->partcollation, partkey->parttypcoll,
 		   sizeof(Oid) * partnatts);
 
 	part_scheme->parttyplen = (int16 *) palloc(sizeof(int16) * partnatts);
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h
index db8de2dfd0..d576aa7350 100644
--- a/src/include/nodes/relation.h
+++ b/src/include/nodes/relation.h
@@ -351,7 +351,7 @@ typedef struct PartitionSchemeData
 	int16		partnatts;		/* number of partition attributes */
 	Oid		   *partopfamily;	/* OIDs of operator families */
 	Oid		   *partopcintype;	/* OIDs of opclass declared input data types */
-	Oid		   *parttypcoll;	/* OIDs of collations of partition keys. */
+	Oid		   *partcollation;	/* OIDs of partitioning collations */
 
 	/* Cached information about partition key data types. */
 	int16	   *parttyplen;