diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index 2b8b8a7491..80a1c02f75 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -476,29 +476,28 @@ (define-public python-sip
        #:modules ((srfi srfi-1)
                   ,@%gnu-build-system-modules)
        #:phases
-         (alist-replace
-          'configure
-          (lambda* (#:key inputs outputs #:allow-other-keys)
-            (let* ((out (assoc-ref outputs "out"))
-                   (bin (string-append out "/bin"))
-                   (include (string-append out "/include"))
-                   (python (assoc-ref inputs "python"))
-                   (python-version
-                     (last (string-split python #\-)))
-                   (python-major+minor
-                     (string-join
-                       (take (string-split python-version #\.) 2)
-                       "."))
-                   (lib (string-append out "/lib/python"
-                                       python-major+minor
-                                       "/site-packages")))
-              (zero?
-                (system* "python" "configure.py"
-                         "--bindir" bin
-                         "--destdir" lib
-                         "--incdir" include))))
-          %standard-phases)))
-    (home-page "http://www.riverbankcomputing.com/software/sip/intro")
+       (modify-phases %standard-phases
+         (replace 'configure
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (bin (string-append out "/bin"))
+                    (include (string-append out "/include"))
+                    (python (assoc-ref inputs "python"))
+                    (python-version
+                      (last (string-split python #\-)))
+                    (python-major+minor
+                      (string-join
+                        (take (string-split python-version #\.) 2)
+                        "."))
+                    (lib (string-append out "/lib/python"
+                                        python-major+minor
+                                        "/site-packages")))
+               (zero?
+                 (system* "python" "configure.py"
+                          "--bindir" bin
+                          "--destdir" lib
+                          "--incdir" include))))))))
+    (home-page "https://www.riverbankcomputing.com/software/sip/intro")
     (synopsis "Python binding creator for C and C++ libraries")
     (description
      "SIP is a tool to create Python bindings for C and C++ libraries.  It