diff --git a/core/modules/picture/config/schema/picture.schema.yml b/core/modules/picture/config/schema/picture.schema.yml
index 3d53c44..b104d07 100644
--- a/core/modules/picture/config/schema/picture.schema.yml
+++ b/core/modules/picture/config/schema/picture.schema.yml
@@ -26,8 +26,11 @@ picture.mappings.*:
                 - type: sequence
                   label: 'Machine name'
                   sequence:
-                    - type: string
-                      label: 'Image style'
+                    - type: sequence
+                      label: 'Multiplier'
+                      sequence:
+                        - type: string
+                          label: 'Image style'
     breakpointGroup:
       type: string
       label: 'Breakpoint group'