diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
index 4acffd906b9..fcb900652e4 100644
--- a/src/backend/parser/parse_expr.c
+++ b/src/backend/parser/parse_expr.c
@@ -4772,7 +4772,7 @@ transformJsonBehavior(ParseState *pstate, JsonExpr *jsexpr,
 				targetcoll != exprcoll)
 				ereport(ERROR,
 						errcode(ERRCODE_COLLATION_MISMATCH),
-						errmsg("the collation of DEFAULT expression conflicts with RETURNING clause"),
+						errmsg("collation of DEFAULT expression conflicts with RETURNING clause"),
 						errdetail("\"%s\" versus \"%s\"",
 								  get_collation_name(exprcoll),
 								  get_collation_name(targetcoll)),
diff --git a/src/test/regress/expected/collate.icu.utf8.out b/src/test/regress/expected/collate.icu.utf8.out
index d385668afaf..7f892182800 100644
--- a/src/test/regress/expected/collate.icu.utf8.out
+++ b/src/test/regress/expected/collate.icu.utf8.out
@@ -2707,12 +2707,12 @@ SELECT JSON_VALUE('{"a": "A"}', '$.a' RETURNING d1 DEFAULT 'C' ON EMPTY) = 'a';
 (1 row)
 
 SELECT JSON_VALUE('{"a": "A"}', '$.a' RETURNING d1 DEFAULT 'C'::d2 ON EMPTY) = 'a'; -- error
-ERROR:  the collation of DEFAULT expression conflicts with RETURNING clause
+ERROR:  collation of DEFAULT expression conflicts with RETURNING clause
 LINE 1: ...ON_VALUE('{"a": "A"}', '$.a' RETURNING d1 DEFAULT 'C'::d2 ON...
                                                              ^
 DETAIL:  "C" versus "case_insensitive"
 SELECT JSON_VALUE('{"a": "A"}', '$.a' RETURNING d1 DEFAULT 'C' COLLATE "C" ON EMPTY) = 'a'; -- error
-ERROR:  the collation of DEFAULT expression conflicts with RETURNING clause
+ERROR:  collation of DEFAULT expression conflicts with RETURNING clause
 LINE 1: ...ON_VALUE('{"a": "A"}', '$.a' RETURNING d1 DEFAULT 'C' COLLAT...
                                                              ^
 DETAIL:  "C" versus "case_insensitive"
@@ -2729,12 +2729,12 @@ SELECT JSON_VALUE('{"a": "A"}', '$.c' RETURNING d1 DEFAULT 'A' COLLATE case_inse
 (1 row)
 
 SELECT JSON_VALUE('{"a": "A"}', '$.c' RETURNING d1 DEFAULT 'A'::d2 ON EMPTY) = 'a'; -- error
-ERROR:  the collation of DEFAULT expression conflicts with RETURNING clause
+ERROR:  collation of DEFAULT expression conflicts with RETURNING clause
 LINE 1: ...ON_VALUE('{"a": "A"}', '$.c' RETURNING d1 DEFAULT 'A'::d2 ON...
                                                              ^
 DETAIL:  "C" versus "case_insensitive"
 SELECT JSON_VALUE('{"a": "A"}', '$.c' RETURNING d1 DEFAULT 'A' COLLATE "C" ON EMPTY) = 'a'; -- error
-ERROR:  the collation of DEFAULT expression conflicts with RETURNING clause
+ERROR:  collation of DEFAULT expression conflicts with RETURNING clause
 LINE 1: ...ON_VALUE('{"a": "A"}', '$.c' RETURNING d1 DEFAULT 'A' COLLAT...
                                                              ^
 DETAIL:  "C" versus "case_insensitive"