diff --git a/src/pkg/syscall/ztypes_darwin_386.go b/src/pkg/syscall/ztypes_darwin_386.go
index b3541778e04..1f378427f65 100644
--- a/src/pkg/syscall/ztypes_darwin_386.go
+++ b/src/pkg/syscall/ztypes_darwin_386.go
@@ -2,6 +2,10 @@
 
 // MACHINE GENERATED - DO NOT EDIT.
 
+// Manual corrections: TODO: need to fix godefs (issue 1466)
+//	change Msghdr field to Iov *Iovec (was uint32/64)
+//	change BpfProgram field to Insns *BpfInsn (was uint32/64)
+
 package syscall
 
 // Constants
diff --git a/src/pkg/syscall/ztypes_darwin_amd64.go b/src/pkg/syscall/ztypes_darwin_amd64.go
index d61c8b8de3d..5fa27bdd75c 100644
--- a/src/pkg/syscall/ztypes_darwin_amd64.go
+++ b/src/pkg/syscall/ztypes_darwin_amd64.go
@@ -2,6 +2,10 @@
 
 // MACHINE GENERATED - DO NOT EDIT.
 
+// Manual corrections: TODO: need to fix godefs (issue 1466)
+//	change Msghdr field to Iov *Iovec (was uint32/64)
+//	change BpfProgram field to Insns *BpfInsn (was uint32/64)
+
 package syscall
 
 // Constants