diff --git a/core/modules/language/config/install/language.entity.und.yml b/core/modules/language/config/install/language.entity.und.yml
index 8a35047..67caf48 100644
--- a/core/modules/language/config/install/language.entity.und.yml
+++ b/core/modules/language/config/install/language.entity.und.yml
@@ -1,6 +1,6 @@
 id: und
 label: 'Not specified'
-direction: ltr
+direction: 'ltr'
 weight: 1
 locked: true
 status: true
diff --git a/core/modules/language/config/install/language.entity.zxx.yml b/core/modules/language/config/install/language.entity.zxx.yml
index fc63387..7f02cf7 100644
--- a/core/modules/language/config/install/language.entity.zxx.yml
+++ b/core/modules/language/config/install/language.entity.zxx.yml
@@ -1,6 +1,6 @@
 id: zxx
 label: 'Not applicable'
-direction: ltr
+direction: 'ltr'
 weight: 2
 locked: true
 status: true