diff --git a/contrib/pg_upgrade/pg_upgrade.h b/contrib/pg_upgrade/pg_upgrade.h
index 51b78a2..c2d48f5 100644
--- a/contrib/pg_upgrade/pg_upgrade.h
+++ b/contrib/pg_upgrade/pg_upgrade.h
@@ -66,7 +66,6 @@ extern int  pgunlink(const char *path);
 #define TABLE_SPACE_SUBDIRS	201001111
 
 /* from pgport */
-extern void copydir(char *fromdir, char *todir, bool recurse);
 extern bool rmtree(const char *path, bool rmtopdir);
 
 /*