diff --git a/guix/channels.scm b/guix/channels.scm
index 05226e766b..f68bbcf693 100644
--- a/guix/channels.scm
+++ b/guix/channels.scm
@@ -86,6 +86,7 @@
             latest-channel-instances
             checkout->channel-instance
             latest-channel-derivation
+            channel-instance->sexp
             channel-instances->manifest
             %channel-profile-hooks
             channel-instances->derivation