diff --git a/lib/install/rust.js b/lib/install/rust.js
index 0cbd6c28..9c9b9c3a 100644
--- a/lib/install/rust.js
+++ b/lib/install/rust.js
@@ -139,7 +139,7 @@ module.exports.toolchainPath = () => {
     var values = fs.readdirSync(sdkPlatformPath);
 
     for (var i = 0; i < values.length; i++) {
-      if (values[i].match(/^toolchain\-/)) {
+      if (values[i].match(/^toolchain\-mipsel/)) {
         return resolve(path.join(sdkPlatformPath, values[i]));
       }
     }
@@ -304,7 +304,7 @@ function extract(checksumVerify, filename, sdkStream, root, strip, name, decompr
 }
 
 function extractTools(checksumVerify, filename, sdkStream) {
-  var root = path.join(SDK_PATHS.sdk, 'macos');
+  var root = path.join(SDK_PATHS.sdk, getPlatform());
   return extract(checksumVerify, filename, sdkStream, root, 2, 'Tessel build tools', bz2());
 }