diff --git a/src/pkg/syscall/zerrors_linux_386.go b/src/pkg/syscall/zerrors_linux_386.go
index fe45d23f14..43d27827cb 100644
--- a/src/pkg/syscall/zerrors_linux_386.go
+++ b/src/pkg/syscall/zerrors_linux_386.go
@@ -640,7 +640,6 @@ const (
 	SIOCSIFTXQLEN                    = 0x8943
 	SIOCSPGRP                        = 0x8902
 	SIOCSRARP                        = 0x8962
-	SIOGIFINDEX                      = 0x8933
 	SOCK_CLOEXEC                     = 0x80000
 	SOCK_DCCP                        = 0x6
 	SOCK_DGRAM                       = 0x2
diff --git a/src/pkg/syscall/zerrors_linux_amd64.go b/src/pkg/syscall/zerrors_linux_amd64.go
index f9404d0894..04f4dad2cd 100644
--- a/src/pkg/syscall/zerrors_linux_amd64.go
+++ b/src/pkg/syscall/zerrors_linux_amd64.go
@@ -641,7 +641,6 @@ const (
 	SIOCSIFTXQLEN                    = 0x8943
 	SIOCSPGRP                        = 0x8902
 	SIOCSRARP                        = 0x8962
-	SIOGIFINDEX                      = 0x8933
 	SOCK_CLOEXEC                     = 0x80000
 	SOCK_DCCP                        = 0x6
 	SOCK_DGRAM                       = 0x2