config/schema/cdn.conditions.schema.yml | 3 +++
 config/schema/cdn.mapping.schema.yml    | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/config/schema/cdn.conditions.schema.yml b/config/schema/cdn.conditions.schema.yml
index ad0147e..a4022e5 100644
--- a/config/schema/cdn.conditions.schema.yml
+++ b/config/schema/cdn.conditions.schema.yml
@@ -1,18 +1,21 @@
 # AND logic applies: all conditions must be met.
 cdn.conditions:
   type: sequence
+  orderby: key
   label: 'Conditions'
   sequence:
     type: cdn.condition.[%key]
 
 cdn.condition.not:
   type: sequence
+  orderby: key
   label: 'Negated conditions'
   sequence:
     type: cdn.condition.[%key]
 
 cdn.condition.extensions:
   type: sequence
+  orderby: value
   label: 'Allowed file extensions'
   sequence:
     type: string
diff --git a/config/schema/cdn.mapping.schema.yml b/config/schema/cdn.mapping.schema.yml
index dd76def..e582490 100644
--- a/config/schema/cdn.mapping.schema.yml
+++ b/config/schema/cdn.mapping.schema.yml
@@ -27,6 +27,7 @@ cdn.mapping.auto-balanced:
   mapping:
     domains:
       type: sequence
+	  orderby: value
       label: 'Multiple CDN domains across which to auto-balance files (in a consistent manner).'
       sequence:
         type: cdn.domain
@@ -43,6 +44,7 @@ cdn.mapping.complex:
       label: 'The optional fallback CDN domain to use when none of the other domains are selected.'
     domains:
       type: sequence
+	  orderby: value
       sequence:
         # @todo How to prevent recursion? This should only accept 'simple', 'auto-balanced' and whichever ones are added in the future.
         type: cdn.mapping.[type]