diff --git a/gnu/packages/dav.scm b/gnu/packages/dav.scm
index 3f865ac0b3..50274fa8cb 100644
--- a/gnu/packages/dav.scm
+++ b/gnu/packages/dav.scm
@@ -24,6 +24,7 @@
 (define-module (gnu packages dav)
   #:use-module (guix build-system python)
   #:use-module (guix download)
+  #:use-module (guix gexp)
   #:use-module (guix licenses)
   #:use-module (guix packages)
   #:use-module (guix git-download)
@@ -131,20 +132,23 @@ efficient syncing
                "1fl21m10ghrpmkqa12g0qri99cxk9879pkb60jd4b4w2mgp8q1gx"))))
     (build-system python-build-system)
     (arguments
-     `(#:tests? #f ; The test suite is very flakey.
-       #:phases (modify-phases %standard-phases
-        (replace 'check
-          (lambda* (#:key inputs outputs tests? #:allow-other-keys)
-            (add-installed-pythonpath inputs outputs)
-            (setenv "DETERMINISTIC_TESTS" "true")
-            (setenv "DAV_SERVER" "radicale")
-            (setenv "REMOTESTORAGE_SERVER" "skip")
-            (if tests?
-                (invoke "make" "test"))))
-        (add-after 'unpack 'patch-version-call
-          (lambda _
-            (substitute* "docs/conf.py"
-              (("^release.*") (string-append "release = '" ,version "'\n"))))))))
+     (list
+      #:tests? #f                       ; the test suite is very flakey
+      #:phases
+      #~(modify-phases %standard-phases
+          (replace 'check
+            (lambda* (#:key inputs outputs tests? #:allow-other-keys)
+              (add-installed-pythonpath inputs outputs)
+              (setenv "DETERMINISTIC_TESTS" "true")
+              (setenv "DAV_SERVER" "radicale")
+              (setenv "REMOTESTORAGE_SERVER" "skip")
+              (if tests?
+                  (invoke "make" "test"))))
+          (add-after 'unpack 'patch-version-call
+            (lambda _
+              (substitute* "docs/conf.py"
+                (("^release.*")
+                 (string-append "release = '" #$version "'\n"))))))))
     (native-inputs
      (list python-setuptools-scm
            python-sphinx