diff --git a/gnu/packages/ncurses.scm b/gnu/packages/ncurses.scm
index 52bc2867fe..2b0d442664 100644
--- a/gnu/packages/ncurses.scm
+++ b/gnu/packages/ncurses.scm
@@ -86,6 +86,7 @@ (define lib.so
           ;; what users expect.
           ,(string-append "--includedir=" (assoc-ref %outputs "out")
                           "/include")
+          "--enable-overwrite"                    ;really honor --includedir
 
           ;; Make sure programs like 'tic', 'reset', and 'clear' have a
           ;; correct RUNPATH.