diff --git a/v4/exampleSite/config.toml b/v4/exampleSite/config.toml
index 2e75678c8..952049bb5 100644
--- a/v4/exampleSite/config.toml
+++ b/v4/exampleSite/config.toml
@@ -20,9 +20,6 @@ googleAnalytics = ""
 disqusShortname = ""
 
 [params]
-  # theme.css and theme.js will not be minified, and integrity will not be added
-  env = "DEV"
-
   # Custom CSS/JS modules that will be imported by the template.
   # Files are relative to the static/ directory or a URL.
   # Files are imported in the order they appear here, after
diff --git a/v4/layouts/partials/css.html b/v4/layouts/partials/css.html
index 4ef8ef468..3a3092272 100644
--- a/v4/layouts/partials/css.html
+++ b/v4/layouts/partials/css.html
@@ -1,7 +1,7 @@
 {{ $options := dict "targetPath" "theme.css" "enableSourceMap" true "precision" 6 }}
 {{ $css := resources.Get "sass/theme.scss" | resources.ExecuteAsTemplate "theme.scss" . | toCSS $options }}
 
-{{ if or (.Site.IsServer) (eq .Site.Params.env "DEV") }}
+{{ if or (.Site.IsServer) (eq hugo.Environment "development") }}
     <link rel="stylesheet" href="{{ $css.Permalink }}" media="screen">
 {{ else }}
     {{ $css := $css | resources.Minify | resources.Fingerprint }}
diff --git a/v4/layouts/partials/js.html b/v4/layouts/partials/js.html
index 1b058e070..483915a90 100644
--- a/v4/layouts/partials/js.html
+++ b/v4/layouts/partials/js.html
@@ -27,7 +27,7 @@
 
 {{ $js := $jsToConcat | resources.Concat "theme.js" }}
 
-{{ if or (.Site.IsServer) (eq .Site.Params.env "DEV") }}
+{{ if or (.Site.IsServer) (eq hugo.Environment "development") }}
     <script src="{{ $js.Permalink }}"></script>
 {{ else }}
     {{ $js := $js | resources.Minify | resources.Fingerprint }}