diff --git a/guix/scripts/size.scm b/guix/scripts/size.scm
index 48b8ecc881..d26ed98388 100644
--- a/guix/scripts/size.scm
+++ b/guix/scripts/size.scm
@@ -278,7 +278,7 @@ (define %options
               %standard-build-options)
         (option '(#\h "help") #f #f
                 (lambda args
-                  (show-help)
+                  (leave-on-EPIPE (show-help))
                   (exit 0)))
         (option '(#\V "version") #f #f
                 (lambda args