diff --git a/gnu/packages/visidata.scm b/gnu/packages/visidata.scm
index 667aea172e..6ba2939b4f 100644
--- a/gnu/packages/visidata.scm
+++ b/gnu/packages/visidata.scm
@@ -45,7 +45,7 @@
        (modify-phases %standard-phases
          (replace 'check
            (lambda* (#:key tests? #:allow-other-keys)
-             (if tests? (invoke "pytest"))
+             (when tests? (invoke "pytest"))
              #t)))))
     (inputs
      `(("dateutil" ,python-dateutil)