diff --git a/static/i18n/en/app.yml b/static/i18n/en/app.yml
index 506665c1..29cd16e4 100644
--- a/static/i18n/en/app.yml
+++ b/static/i18n/en/app.yml
@@ -1,6 +1,6 @@
 common:
-  labelYes: Yes
-  labelNo: No
+  labelYes: 'Yes'
+  labelNo: 'No'
   ok: OK
   apply: Apply
   confirm: Confirm