diff --git a/wowchemy/config.yaml b/wowchemy/config.yaml
index 5f7ee66f..ce3c570e 100644
--- a/wowchemy/config.yaml
+++ b/wowchemy/config.yaml
@@ -46,14 +46,15 @@ module:
       target: i18n
     - source: archetypes
       target: archetypes
-params:
-  theme: minimal
-  font: native
-  date_format: 'Jan 2, 2006'
-  time_format: '3:04 PM'
-  address_format: en-us
 security:
   funcs:
     getenv:
       - ^HUGO_
       - ^WC_
+params:
+  theme: minimal
+  font: native
+  locale:
+    date_format: 'Jan 2, 2006'
+    time_format: '3:04 PM'
+    address_format: en-us
diff --git a/wowchemy/layouts/partials/book_layout.html b/wowchemy/layouts/partials/book_layout.html
index 6a14c92e..280a58bc 100644
--- a/wowchemy/layouts/partials/book_layout.html
+++ b/wowchemy/layouts/partials/book_layout.html
@@ -51,7 +51,7 @@
         </div>
 
         <div class="body-footer">
-          <p>{{ i18n "last_updated" }} {{ $.Lastmod | time.Format site.Params.date_format }}</p>
+          <p>{{ i18n "last_updated" }} {{ $.Lastmod | time.Format site.Params.locale.date_format }}</p>
 
           {{ partial "page_edit" . }}
 
diff --git a/wowchemy/layouts/partials/functions/get_event_dates.html b/wowchemy/layouts/partials/functions/get_event_dates.html
index df9c5fbd..4d3181be 100644
--- a/wowchemy/layouts/partials/functions/get_event_dates.html
+++ b/wowchemy/layouts/partials/functions/get_event_dates.html
@@ -1,6 +1,6 @@
 {{/* Function to get event start and end dates/times. */}}
 {{ $t1 := time .Date }}{{/* Start datetime. */}}
-{{ $str := slice (time.Format site.Params.date_format (time $t1)) }}{{/* Init return string with start date. */}}
+{{ $str := slice (time.Format site.Params.locale.date_format (time $t1)) }}{{/* Init return string with start date. */}}
 {{/* Show start time if not all day event. */}}
 {{ if not .Params.all_day }}{{ $str = $str | append (time.Format site.Params.time_format (time $t1)) }}{{ end }}
 {{/* Show event end date if provided. */}}
@@ -9,7 +9,7 @@
   {{ $t2 := time .Params.date_end}}{{/* End datetime. */}}
   {{/* Show end date if it differs to start date. */}}
   {{ if not (eq $t1.Year $t2.Year | and (eq $t1.Month $t2.Month) | and (eq $t1.Day $t2.Day)) }}
-    {{ $str = $str | append (time.Format site.Params.date_format (time $t2)) }}
+    {{ $str = $str | append (time.Format site.Params.locale.date_format (time $t2)) }}
   {{ end }}
   {{/* Show end time if not all day event. */}}
   {{ if not .Params.all_day }}{{ $str = $str | append (time.Format site.Params.time_format (time $t2)) }}{{ end }}
diff --git a/wowchemy/layouts/partials/page_metadata.html b/wowchemy/layouts/partials/page_metadata.html
index c017a55a..6191b1c6 100644
--- a/wowchemy/layouts/partials/page_metadata.html
+++ b/wowchemy/layouts/partials/page_metadata.html
@@ -15,7 +15,7 @@
 
   {{ if not (in (slice "event" "page") $page.Type) | and (ne $page.Params.show_date false) }}
   <span class="article-date">
-    {{ $date := $page.Lastmod | time.Format site.Params.date_format }}
+    {{ $date := $page.Lastmod | time.Format site.Params.locale.date_format }}
     {{ if eq $page.Type "publication" }}
       {{ $date = $page.Date | time.Format (site.Params.publications.date_format | default "January, 2006") }}
     {{ else }}
diff --git a/wowchemy/layouts/slides/baseof.html b/wowchemy/layouts/slides/baseof.html
index ee620b59..5d1eed4d 100644
--- a/wowchemy/layouts/slides/baseof.html
+++ b/wowchemy/layouts/slides/baseof.html
@@ -1,12 +1,10 @@
 <!DOCTYPE html>
 <html lang="{{ site.LanguageCode | default "en-us" }}">
 <head>
-  {{ $media_dir := site.Params.media_dir | default "media" }}
-  {{ .Scratch.Set "media_dir" $media_dir }}
 
-  {{ $css := site.Data.assets.css }}
   {{ $cdn_url_reveal := "https://cdn.jsdelivr.net/npm/reveal.js@4.2.1" }}
   {{ $js := site.Data.assets.js }}
+  {{ $css := site.Data.assets.css }}
 
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">