diff --git a/.circleci/config.yml b/.circleci/config.yml
index 88e401bbb2..464710e090 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -65,6 +65,15 @@ jobs:
       - <<: *restore_dependency_cache
       - run: npm run test:examples
 
+  # Test locale files
+  test_locales:
+    <<: *defaults
+    steps:
+      - checkout
+      - <<: *restore_dependency_cache
+      - run: npm run build
+      - run: npm run test:locales
+
   # Release a "next" version
   next_release:
     <<: *defaults
@@ -117,12 +126,16 @@ workflows:
       - test_examples:
           requires:
             - test
+      - test_locales:
+          requires:
+            - test
       # Hold for approval
       - hold:
           type: approval
           requires:
             - test
             - test_examples
+            - test_locales
           filters:
             branches:
               only:
@@ -133,6 +146,7 @@ workflows:
             - dependencies
             - test
             - test_examples
+            - test_locales
           filters:
             branches:
               only: develop
@@ -142,6 +156,7 @@ workflows:
             - dependencies
             - test
             - test_examples
+            - test_locales
             - hold
           filters:
             branches:
diff --git a/package.json b/package.json
index d9e0653855..0f7e8a5d02 100644
--- a/package.json
+++ b/package.json
@@ -63,6 +63,7 @@
 		"eslint": "eslint --color --format stylish '{lib,test,build,doc}/**/*.js' 'Gruntfile.js'",
 		"test": "npm run retire && tsc && grunt test",
 		"test:examples": "node ./doc/examples/test-examples",
+		"test:locales": "mocha test/test-locales.js",
 		"version": "echo \"use 'npm run release' to bump axe-core version\" && exit 1",
 		"prepublishOnly": "grunt build && grunt file-exists",
 		"retire": "retire --jspath lib --nodepath ./ --ignorefile .retireignore.json --severity medium",
diff --git a/test/test-locales.js b/test/test-locales.js
new file mode 100644
index 0000000000..01867c31ff
--- /dev/null
+++ b/test/test-locales.js
@@ -0,0 +1,22 @@
+var fs = require('fs');
+var path = require('path');
+var assert = require('assert');
+var glob = require('glob');
+var axe = require(path.join(__dirname, '../axe'));
+
+var localeFiles = glob.sync(path.join(__dirname, '../locales/*.json'));
+
+describe('locales', function() {
+	localeFiles.forEach(function(localeFile) {
+		var localeName = path.basename(localeFile);
+		it(localeName + ' should be valid', function() {
+			var localeData = fs.readFileSync(localeFile, 'utf-8');
+			var locale = JSON.parse(localeData);
+			function fn() {
+				axe.configure({ locale: locale });
+			}
+
+			assert.doesNotThrow(fn);
+		});
+	});
+});