diff --git a/.template/spec/base/config/environments/production_spec.rb b/.template/spec/base/config/environments/production_spec.rb
index 094048ef..9a1d71a0 100644
--- a/.template/spec/base/config/environments/production_spec.rb
+++ b/.template/spec/base/config/environments/production_spec.rb
@@ -34,9 +34,14 @@ def mailer_default_url_config
   
   def i18n_config
     <<~EOT
-      config.i18n.available_locales = ENV.fetch('AVAILABLE_LOCALES').split(', ')
+      # eg: AVAILABLE_LOCALES = 'en,th'
+      config.i18n.available_locales = ENV.fetch('AVAILABLE_LOCALES').split(',')
+      
+      # eg: DEFAULT_LOCALE = 'en'
       config.i18n.default_locale = ENV.fetch('DEFAULT_LOCALE')
-      config.i18n.fallbacks = ENV.fetch('FALLBACK_LOCALES').split(', ')
+      
+      # eg: FALLBACK_LOCALES = 'en,th'
+      config.i18n.fallbacks = ENV.fetch('FALLBACK_LOCALES').split(',')
     EOT
   end
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index d2415baf..92555b19 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -20,9 +20,14 @@
 # Adding the correct fallback configuration along with default locale and available locales
 environment do
   <<~EOT
-    config.i18n.available_locales = ENV.fetch('AVAILABLE_LOCALES').split(', ')
+    # eg: AVAILABLE_LOCALES = 'en,th'
+    config.i18n.available_locales = ENV.fetch('AVAILABLE_LOCALES').split(',')
+    
+    # eg: DEFAULT_LOCALE = 'en'
     config.i18n.default_locale = ENV.fetch('DEFAULT_LOCALE')
-    config.i18n.fallbacks = ENV.fetch('FALLBACK_LOCALES').split(', ')
+    
+    # eg: FALLBACK_LOCALES = 'en,th'
+    config.i18n.fallbacks = ENV.fetch('FALLBACK_LOCALES').split(',')
     
   EOT
 end