diff --git a/src/runtime/defs_linux_mips64x.go b/src/runtime/defs_linux_mips64x.go
index 7449d2cfac96d7..4d0f10385a1b06 100644
--- a/src/runtime/defs_linux_mips64x.go
+++ b/src/runtime/defs_linux_mips64x.go
@@ -12,7 +12,7 @@ const (
 	_EINTR  = 0x4
 	_EAGAIN = 0xb
 	_ENOMEM = 0xc
-	_ENOSYS = 0x26
+	_ENOSYS = 0x59
 
 	_PROT_NONE  = 0x0
 	_PROT_READ  = 0x1
diff --git a/src/runtime/defs_linux_mipsx.go b/src/runtime/defs_linux_mipsx.go
index 5a446e0595f59f..b8da4d00af8a1d 100644
--- a/src/runtime/defs_linux_mipsx.go
+++ b/src/runtime/defs_linux_mipsx.go
@@ -12,7 +12,7 @@ const (
 	_EINTR  = 0x4
 	_EAGAIN = 0xb
 	_ENOMEM = 0xc
-	_ENOSYS = 0x26
+	_ENOSYS = 0x59
 
 	_PROT_NONE  = 0x0
 	_PROT_READ  = 0x1