diff --git a/linux/syscall.h b/linux/syscall.h
index d6d67998..6b782f15 100644
--- a/linux/syscall.h
+++ b/linux/syscall.h
@@ -143,7 +143,7 @@ int sys_osf_utimes();
 #  undef SYS_sendmsg
 #  undef SYS_recvmsg
 # endif /* IA64 */
-# if defined S390 || defined S390X
+# if defined S390 || defined S390X || defined POWERPC
 #  define SYS_socket_subcall	256
 # else
 #  define SYS_socket_subcall	300