diff --git a/tests/gexp.scm b/tests/gexp.scm
index 83fe81154..31c7ce22f 100644
--- a/tests/gexp.scm
+++ b/tests/gexp.scm
@@ -948,7 +948,7 @@
       (return (and (zero? (close-pipe pipe))
                    (= (expt n 2) (string->number str)))))))
 
-(test-assertm "gexp->script #:module-path"
+(test-assert "gexp->script #:module-path"
   (call-with-temporary-directory
    (lambda (directory)
      (define str
@@ -961,23 +961,24 @@
                         (define-public %fake! ,str))
                 port)))
 
-     (mlet* %store-monad ((exp -> (with-imported-modules '((guix base32))
-                                    (gexp (begin
-                                            (use-modules (guix base32))
-                                            (write (list %load-path
-                                                         %fake!))))))
-                          (drv    (gexp->script "guile-thing" exp
-                                                #:guile %bootstrap-guile
-                                                #:module-path (list directory)))
-                          (out -> (derivation->output-path drv))
-                          (done   (built-derivations (list drv))))
-       (let* ((pipe  (open-input-pipe out))
-              (data  (read pipe)))
-         (return (and (zero? (close-pipe pipe))
-                      (match data
-                        ((load-path str*)
-                         (and (string=? str* str)
-                              (not (member directory load-path))))))))))))
+     (run-with-store %store
+       (mlet* %store-monad ((exp -> (with-imported-modules '((guix base32))
+                                      (gexp (begin
+                                              (use-modules (guix base32))
+                                              (write (list %load-path
+                                                           %fake!))))))
+                            (drv    (gexp->script "guile-thing" exp
+                                                  #:guile %bootstrap-guile
+                                                  #:module-path (list directory)))
+                            (out -> (derivation->output-path drv))
+                            (done   (built-derivations (list drv))))
+         (let* ((pipe  (open-input-pipe out))
+                (data  (read pipe)))
+           (return (and (zero? (close-pipe pipe))
+                        (match data
+                          ((load-path str*)
+                           (and (string=? str* str)
+                                (not (member directory load-path)))))))))))))
 
 (test-assertm "program-file"
   (let* ((n      (random (expt 2 50)))