diff --git a/tools/scripts/build/build-curriculum.js b/tools/scripts/build/build-curriculum.js
index dcde52afd9..a5d56f2a6e 100644
--- a/tools/scripts/build/build-curriculum.js
+++ b/tools/scripts/build/build-curriculum.js
@@ -4,13 +4,17 @@ const path = require('path');
 const { getChallengesForLang } = require('../../../curriculum/getChallenges');
 const { buildMobileCurriculum } = require('./build-mobile-curriculum');
 
+const { CURRICULUM_LOCALE } = process.env;
+
 const globalConfigPath = path.resolve(__dirname, '../../../config');
 
 // We are defaulting to English because the ids for the challenges are same
 // across all languages.
 getChallengesForLang('english')
   .then(result => {
-    buildMobileCurriculum(result);
+    if (CURRICULUM_LOCALE === 'english') {
+      buildMobileCurriculum(result);
+    }
     return result;
   })
   .then(JSON.stringify)