diff --git a/contrib/pg_upgrade/server.c b/contrib/pg_upgrade/server.c
index 7d2aa352c802873e8848d3f30a16f6fc5c4021f3..381096e3dd4760463253e2eecc32a920476c1c8d 100644
--- a/contrib/pg_upgrade/server.c
+++ b/contrib/pg_upgrade/server.c
@@ -327,7 +327,7 @@ check_pghost_envvar(void)
 
 	if (!start)
 		pg_fatal("out of memory\n");
-		
+
 	for (option = start; option->keyword != NULL; option++)
 	{
 		if (option->envvar && (strcmp(option->envvar, "PGHOST") == 0 ||