diff --git a/include/aliases.h b/include/aliases.h
index ea87cf989c..84c832fdd1 100644
--- a/include/aliases.h
+++ b/include/aliases.h
@@ -3,7 +3,8 @@
 
 extern int __getaliasent_r (struct aliasent *__restrict __result_buf,
 			    char *__restrict __buffer, size_t __buflen,
-			    struct aliasent **__restrict __result);
+			    struct aliasent **__restrict __result)
+     attribute_hidden;
 extern int __old_getaliasent_r (struct aliasent *__restrict __result_buf,
 				char *__restrict __buffer, size_t __buflen,
 				struct aliasent **__restrict __result);