diff --git a/src/pkg/syscall/ztypes_linux_arm.go b/src/pkg/syscall/ztypes_linux_arm.go
index a845985a8b..e90edfbade 100644
--- a/src/pkg/syscall/ztypes_linux_arm.go
+++ b/src/pkg/syscall/ztypes_linux_arm.go
@@ -2,9 +2,10 @@
 
 // MACHINE GENERATED - DO NOT EDIT.
 
-// Manual corrections: UGH
+// Manual corrections: TODO(rsc): need to fix godefs
 //	remove duplicate PtraceRegs type
 //	change RawSockaddrUnix field to Path [108]int8 (was uint8()
+//  add padding to EpollEvent
 
 package syscall
 
@@ -290,6 +291,7 @@ type Ustat_t struct {
 
 type EpollEvent struct {
 	Events uint32
+	PadFd  int32
 	Fd     int32
 	Pad    int32
 }