diff --git a/billometer/server/single.yml b/billometer/server/single.yml
index be13be2..8152202 100644
--- a/billometer/server/single.yml
+++ b/billometer/server/single.yml
@@ -22,7 +22,7 @@
       database:
         billometer:
           encoding: UTF8
-          locale: cs_CZ
+          locale: en_US
           users:
           - name: billometer
             createdb: true
diff --git a/gerrit/server/single.yml b/gerrit/server/single.yml
index c279f00..f0f6492 100644
--- a/gerrit/server/single.yml
+++ b/gerrit/server/single.yml
@@ -61,7 +61,7 @@
         gerrit:
           enabled: true
           encoding: 'UTF8'
-          locale: 'cs_CZ'
+          locale: 'en_US'
           users:
           - name: gerrit
             password: ${_param:postgresql_gerrit_password}
diff --git a/graphite/server/single.yml b/graphite/server/single.yml
index 364877e..237c65d 100644
--- a/graphite/server/single.yml
+++ b/graphite/server/single.yml
@@ -29,7 +29,7 @@
       database:
         graphite:
           encoding: UTF8
-          locale: cs_CZ
+          locale: en_US
           users:
           - name: graphite
             password: ${_param:postgresql_graphite_password}
diff --git a/linux/system/single/init.yml b/linux/system/single/init.yml
index 4429a82..970184c 100644
--- a/linux/system/single/init.yml
+++ b/linux/system/single/init.yml
@@ -41,8 +41,6 @@
         en_US.UTF-8:
           enabled: true
           default: true
-        cs_CZ.UTF-8:
-          enabled: true
       limit:
         default:
           enabled: true