diff --git a/gnu/packages/apl.scm b/gnu/packages/apl.scm
index badec04333..a1b923053c 100644
--- a/gnu/packages/apl.scm
+++ b/gnu/packages/apl.scm
@@ -49,7 +49,8 @@ (define-public apl
        ("sqlite" ,sqlite)
        ("readline" ,readline)))
     (arguments
-     `(#:configure-flags (list (string-append
+     `(#:configure-flags (list "CXX_WERROR=no"
+                               (string-append
                                 "--with-sqlite3="
                                 (assoc-ref %build-inputs "sqlite")))))
     (synopsis "APL interpreter")