diff --git a/src/backend/utils/adt/pg_locale.c b/src/backend/utils/adt/pg_locale.c
index 453af401cab..b81b9442d85 100644
--- a/src/backend/utils/adt/pg_locale.c
+++ b/src/backend/utils/adt/pg_locale.c
@@ -1680,7 +1680,7 @@ get_collation_actual_version(char collprovider, const char *collcollate)
 		locale_t	loc;
 
 		/* Look up FreeBSD collation version. */
-		loc = newlocale(LC_COLLATE, collcollate, NULL);
+		loc = newlocale(LC_COLLATE_MASK, collcollate, NULL);
 		if (loc)
 		{
 			collversion =