diff --git a/spec/context-menu-manager-spec.js b/spec/context-menu-manager-spec.js
index 5fcce5d811..140b6dd4e8 100644
--- a/spec/context-menu-manager-spec.js
+++ b/spec/context-menu-manager-spec.js
@@ -530,7 +530,7 @@ describe('ContextMenuManager', function() {
           stringKey: "Hello Pulsar",
           otherStringKey: "Goodbye Pulsar"
         }
-      }, "en-US");
+      }, "en");
 
       contextMenu.add({
         '.parent': [
diff --git a/spec/menu-manager-spec.js b/spec/menu-manager-spec.js
index a4322d057d..bb4afd5999 100644
--- a/spec/menu-manager-spec.js
+++ b/spec/menu-manager-spec.js
@@ -116,7 +116,7 @@ describe('MenuManager', function() {
           stringKey: "Hello Pulsar",
           otherStringKey: "Goodbye Pulsar"
         }
-      }, "en-US");
+      }, "en");
 
       const disposable = menu.add([
         { label: '%example.stringKey%', submenu: [{ label: '%example.otherStringKey%', command: 'b' }] }