diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index c2578c35a9..fbe5cdbf9f 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -2,7 +2,7 @@
 ;;; Copyright © 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2015 Vicente Vera Parra <vicentemvp@gmail.com>
 ;;; Copyright © 2016 Andreas Enge <andreas@enge.fr>
-;;; Copyright © 2016, 2017, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016, 2017, 2019, 2020, 2021 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2016 Pjotr Prins <pjotr.guix@thebird.nl>
 ;;; Copyright © 2016 Roel Janssen <roel@gnu.org>
 ;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
@@ -1970,7 +1970,11 @@ (define-public python-statsmodels
        (uri (pypi-uri "statsmodels" version))
        (sha256
         (base32
-         "1w6mf8b86vizi2895j11szqryr2v1ckjig3wp9fv94aslfh3zpjv"))))
+         "1w6mf8b86vizi2895j11szqryr2v1ckjig3wp9fv94aslfh3zpjv"))
+       (modules '((guix build utils)))
+       (snippet
+        '(begin
+           (for-each delete-file (find-files "." "\\.c$"))))))
     (build-system python-build-system)
     (arguments
      `(;; The test suite is very large and rather brittle.  Tests often fail