diff --git a/src/backend/commands/collationcmds.c b/src/backend/commands/collationcmds.c
index 71b21bf0d209de8c71e9d1a482735ed3d1edc6e6..8d4d5b7b63bb2c56cce41f6d27d07ba402097ea9 100644
--- a/src/backend/commands/collationcmds.c
+++ b/src/backend/commands/collationcmds.c
@@ -339,7 +339,7 @@ pg_import_system_collations(PG_FUNCTION_ARGS)
 	}
 
 	if (count == 0)
-		ereport(ERROR,
+		ereport(WARNING,
 				(errmsg("no usable system locales were found")));
 #endif   /* not HAVE_LOCALE_T && not WIN32 */