diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
index c58f3096e63..79fcb54e3a0 100644
--- a/src/backend/commands/analyze.c
+++ b/src/backend/commands/analyze.c
@@ -382,7 +382,7 @@ do_analyze_rel(Relation onerel, int options, VacuumParams *params,
 			if (bms_is_member(i, unique_cols))
 				ereport(ERROR,
 						(errcode(ERRCODE_DUPLICATE_COLUMN),
-						 errmsg("column \"%s\" of relation \"%s\" is specified twice",
+						 errmsg("column \"%s\" of relation \"%s\" appears more than once",
 								col, RelationGetRelationName(onerel))));
 			unique_cols = bms_add_member(unique_cols, i);
 
diff --git a/src/test/regress/expected/vacuum.out b/src/test/regress/expected/vacuum.out
index 23a877e9cca..540f4f3014a 100644
--- a/src/test/regress/expected/vacuum.out
+++ b/src/test/regress/expected/vacuum.out
@@ -82,8 +82,8 @@ VACUUM FULL vactst;
 VACUUM (DISABLE_PAGE_SKIPPING) vaccluster;
 -- check behavior with duplicate column mentions
 VACUUM ANALYZE vaccluster(i,i);
-ERROR:  column "i" of relation "vaccluster" is specified twice
+ERROR:  column "i" of relation "vaccluster" appears more than once
 ANALYZE vaccluster(i,i);
-ERROR:  column "i" of relation "vaccluster" is specified twice
+ERROR:  column "i" of relation "vaccluster" appears more than once
 DROP TABLE vaccluster;
 DROP TABLE vactst;