diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index ea6fc83bbf..fb5d2fd16a 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -3991,9 +3991,12 @@ (define-public python-pillow
      `(#:phases (modify-phases %standard-phases
                   (add-after
                    'install 'check-installed
-                   (lambda _
+                   (lambda* (#:key outputs inputs #:allow-other-keys)
                      (begin
                        (setenv "HOME" (getcwd))
+                       ;; Make installed package available for running the
+                       ;; tests
+                       (add-installed-pythonpath inputs outputs)
                        (and (zero? (system* "python" "selftest.py"
                                             "--installed"))
                             (zero? (system* "python" "test-installed.py"))))))