--- a/build/moz.configure/rust.configure
+++ b/build/moz.configure/rust.configure
@@ -2,23 +2,29 @@
 # vim: set filetype=python:
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 option('--disable-rust', help='Don\'t include Rust language sources')
 
 @depends('--enable-rust')
+@imports('platform')
 def rust_compiler_names(value):
     if value:
+        if platform.system() == 'Windows':
+            return ['rustc.exe']
         return ['rustc']
 
 @depends('--enable-rust')
+@imports('platform')
 def cargo_binary_names(value):
     if value:
+        if platform.system() == 'Windows':
+            return ['cargo.exe']
         return ['cargo']
 
 rustc = check_prog('RUSTC', rust_compiler_names, allow_missing=True)
 cargo = check_prog('CARGO', cargo_binary_names, allow_missing=True)
 
 @depends_if(rustc)
 @checking('rustc version', lambda info: info.version)
 def rustc_info(rustc):