diff --git a/gnu/system/examples/bare-bones.tmpl b/gnu/system/examples/bare-bones.tmpl
index 87e8d1e93c..222ddda579 100644
--- a/gnu/system/examples/bare-bones.tmpl
+++ b/gnu/system/examples/bare-bones.tmpl
@@ -8,7 +8,7 @@
 (operating-system
   (host-name "komputilo")
   (timezone "Europe/Berlin")
-  (locale "en_US.UTF-8")
+  (locale "en_US.utf8")
 
   ;; Assuming /dev/sdX is the target hard disk, and "my-root" is
   ;; the label of the target root file system.
diff --git a/gnu/system/examples/desktop.tmpl b/gnu/system/examples/desktop.tmpl
index 21b4563b53..8b02659478 100644
--- a/gnu/system/examples/desktop.tmpl
+++ b/gnu/system/examples/desktop.tmpl
@@ -9,7 +9,7 @@
 (operating-system
   (host-name "antelope")
   (timezone "Europe/Paris")
-  (locale "en_US.UTF-8")
+  (locale "en_US.utf8")
 
   ;; Assuming /dev/sdX is the target hard disk, and "my-root"
   ;; is the label of the target root file system.
diff --git a/gnu/system/examples/lightweight-desktop.tmpl b/gnu/system/examples/lightweight-desktop.tmpl
index 91e7d0b562..131c43af77 100644
--- a/gnu/system/examples/lightweight-desktop.tmpl
+++ b/gnu/system/examples/lightweight-desktop.tmpl
@@ -9,7 +9,7 @@
 (operating-system
   (host-name "antelope")
   (timezone "Europe/Paris")
-  (locale "en_US.UTF-8")
+  (locale "en_US.utf8")
 
   ;; Assuming /dev/sdX is the target hard disk, and "my-root"
   ;; is the label of the target root file system.