diff --git a/gnu/image.scm b/gnu/image.scm
index 1c954af8cf..8423cf1d9c 100644
--- a/gnu/image.scm
+++ b/gnu/image.scm
@@ -42,6 +42,7 @@ (define-module (gnu image)
             image-partitions
             image-compression?
             image-volatile-root?
+            image-shared-store?
             image-substitutable?
 
             image-type
@@ -95,6 +96,8 @@ (define-record-type* <image>
                       (default #t))
   (volatile-root?     image-volatile-root? ;boolean
                       (default #t))
+  (shared-store?      image-shared-store? ;boolean
+                      (default #f))
   (substitutable?     image-substitutable? ;boolean
                       (default #t)))