diff --git a/gnu/services/nix.scm b/gnu/services/nix.scm
index e73203c2c51..7c58f0edd1b 100644
--- a/gnu/services/nix.scm
+++ b/gnu/services/nix.scm
@@ -35,7 +35,10 @@
   #:use-module (ice-9 match)
   #:use-module (ice-9 format)
   #:use-module (guix modules)
-  #:export (nix-service-type))
+  #:export (nix-service-type
+
+            nix-configuration
+            nix-configuration?))
 
 ;;; Commentary:
 ;;;