diff --git a/src/doc/guide-ffi.md b/src/doc/guide-ffi.md
index 81616c675de..ad80f2b46c8 100644
--- a/src/doc/guide-ffi.md
+++ b/src/doc/guide-ffi.md
@@ -476,6 +476,7 @@ extern crate libc;
 
 #[cfg(target_os = "win32", target_arch = "x86")]
 #[link(name = "kernel32")]
+#[allow(non_snake_case_functions)]
 extern "stdcall" {
     fn SetEnvironmentVariableA(n: *u8, v: *u8) -> libc::c_int;
 }
diff --git a/src/liblibc/lib.rs b/src/liblibc/lib.rs
index 7b6a9122d90..3a9f8bc863b 100644
--- a/src/liblibc/lib.rs
+++ b/src/liblibc/lib.rs
@@ -1,4 +1,4 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -71,6 +71,7 @@
 */
 
 #![allow(non_camel_case_types)]
+#![allow(non_snake_case_functions)]
 #![allow(non_uppercase_statics)]
 #![allow(missing_doc)]
 #![allow(uppercase_variables)]
diff --git a/src/libnative/io/mod.rs b/src/libnative/io/mod.rs
index 0c103bc4695..240b87fda08 100644
--- a/src/libnative/io/mod.rs
+++ b/src/libnative/io/mod.rs
@@ -1,4 +1,4 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -21,6 +21,8 @@
 //! play. The only dependencies of these modules are the normal system libraries
 //! that you would find on the respective platform.
 
+#![allow(non_snake_case_functions)]
+
 use libc::c_int;
 use libc;
 use std::c_str::CString;
diff --git a/src/librustdoc/flock.rs b/src/librustdoc/flock.rs
index f24bd661c8c..fea6748660b 100644
--- a/src/librustdoc/flock.rs
+++ b/src/librustdoc/flock.rs
@@ -141,6 +141,7 @@ mod imp {
 
     static LOCKFILE_EXCLUSIVE_LOCK: libc::DWORD = 0x00000002;
 
+    #[allow(non_snake_case_functions)]
     extern "system" {
         fn LockFileEx(hFile: libc::HANDLE,
                       dwFlags: libc::DWORD,
diff --git a/src/libstd/os.rs b/src/libstd/os.rs
index f6b9a7b24bc..7e6d3c0606f 100644
--- a/src/libstd/os.rs
+++ b/src/libstd/os.rs
@@ -1,4 +1,4 @@
-// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -27,6 +27,7 @@
  */
 
 #![allow(missing_doc)]
+#![allow(non_snake_case_functions)]
 
 use clone::Clone;
 use container::Container;
diff --git a/src/libstd/rand/os.rs b/src/libstd/rand/os.rs
index 3a6c0124ee0..284d41d3208 100644
--- a/src/libstd/rand/os.rs
+++ b/src/libstd/rand/os.rs
@@ -1,4 +1,4 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -93,6 +93,7 @@ mod imp {
     static CRYPT_VERIFYCONTEXT: DWORD = 0xF0000000;
     static NTE_BAD_SIGNATURE: DWORD = 0x80090006;
 
+    #[allow(non_snake_case_functions)]
     extern "system" {
         fn CryptAcquireContextA(phProv: *mut HCRYPTPROV,
                                 pszContainer: LPCSTR,
diff --git a/src/libstd/rt/backtrace.rs b/src/libstd/rt/backtrace.rs
index f4cb770544c..ac421bf78be 100644
--- a/src/libstd/rt/backtrace.rs
+++ b/src/libstd/rt/backtrace.rs
@@ -518,6 +518,7 @@ mod imp {
     use unstable::mutex::{StaticNativeMutex, NATIVE_MUTEX_INIT};
     use slice::ImmutableVector;
 
+    #[allow(non_snake_case_functions)]
     extern "system" {
         fn GetCurrentProcess() -> libc::HANDLE;
         fn GetCurrentThread() -> libc::HANDLE;
diff --git a/src/libstd/rt/libunwind.rs b/src/libstd/rt/libunwind.rs
index 4fd610d7423..00301e71b0d 100644
--- a/src/libstd/rt/libunwind.rs
+++ b/src/libstd/rt/libunwind.rs
@@ -11,6 +11,7 @@
 //! Unwind library interface
 
 #![allow(non_camel_case_types)]
+#![allow(non_snake_case_functions)]
 #![allow(dead_code)] // these are just bindings
 
 use libc;
diff --git a/src/libstd/rt/thread.rs b/src/libstd/rt/thread.rs
index 6cc9604dc59..81dcf909706 100644
--- a/src/libstd/rt/thread.rs
+++ b/src/libstd/rt/thread.rs
@@ -199,6 +199,7 @@ mod imp {
         SwitchToThread();
     }
 
+    #[allow(non_snake_case_functions)]
     extern "system" {
         fn CreateThread(lpThreadAttributes: LPSECURITY_ATTRIBUTES,
                         dwStackSize: SIZE_T,
diff --git a/src/libstd/rt/thread_local_storage.rs b/src/libstd/rt/thread_local_storage.rs
index 2551c89972e..a3ebcbafff8 100644
--- a/src/libstd/rt/thread_local_storage.rs
+++ b/src/libstd/rt/thread_local_storage.rs
@@ -1,4 +1,4 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -86,6 +86,7 @@ pub unsafe fn destroy(key: Key) {
 }
 
 #[cfg(windows)]
+#[allow(non_snake_case_functions)]
 extern "system" {
     fn TlsAlloc() -> DWORD;
     fn TlsFree(dwTlsIndex: DWORD) -> BOOL;
diff --git a/src/libstd/unstable/dynamic_lib.rs b/src/libstd/unstable/dynamic_lib.rs
index 81eb51107ba..6c406a7c847 100644
--- a/src/libstd/unstable/dynamic_lib.rs
+++ b/src/libstd/unstable/dynamic_lib.rs
@@ -1,4 +1,4 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -317,6 +317,7 @@ pub mod dl {
         FreeLibrary(handle as *libc::c_void); ()
     }
 
+    #[allow(non_snake_case_functions)]
     extern "system" {
         fn SetLastError(error: libc::size_t);
         fn LoadLibraryW(name: *libc::c_void) -> *libc::c_void;
diff --git a/src/libstd/unstable/mutex.rs b/src/libstd/unstable/mutex.rs
index 04da7dab6c6..4e51e714777 100644
--- a/src/libstd/unstable/mutex.rs
+++ b/src/libstd/unstable/mutex.rs
@@ -543,6 +543,7 @@ mod imp {
         libc::CloseHandle(block);
     }
 
+    #[allow(non_snake_case_functions)]
     extern "system" {
         fn CreateEventA(lpSecurityAttributes: LPSECURITY_ATTRIBUTES,
                         bManualReset: BOOL,
diff --git a/src/libterm/win.rs b/src/libterm/win.rs
index 837ddf566ef..00e90fc3cde 100644
--- a/src/libterm/win.rs
+++ b/src/libterm/win.rs
@@ -27,6 +27,7 @@ pub struct WinConsole<T> {
     background: color::Color,
 }
 
+#[allow(non_snake_case_functions)]
 #[link(name = "kernel32")]
 extern "system" {
     fn SetConsoleTextAttribute(handle: libc::HANDLE, attr: libc::WORD) -> libc::BOOL;
diff --git a/src/test/bench/shootout-spectralnorm.rs b/src/test/bench/shootout-spectralnorm.rs
index c6a678828c1..c038a056569 100644
--- a/src/test/bench/shootout-spectralnorm.rs
+++ b/src/test/bench/shootout-spectralnorm.rs
@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #![feature(phase)]
+#![allow(non_snake_case_functions)]
 #[phase(syntax)] extern crate green;
 extern crate sync;
 
diff --git a/src/test/bench/sudoku.rs b/src/test/bench/sudoku.rs
index 9235882d1f4..c0ea6f8617d 100644
--- a/src/test/bench/sudoku.rs
+++ b/src/test/bench/sudoku.rs
@@ -11,6 +11,7 @@
 // ignore-pretty very bad with line comments
 
 #![feature(managed_boxes)]
+#![allow(non_snake_case_functions)]
 
 use std::io;
 use std::io::stdio::StdReader;