diff --git a/pkgs/test/buildFHSEnv/default.nix b/pkgs/test/buildFHSEnv/default.nix
index 3a97359c6f33..0a355e1aeeac 100644
--- a/pkgs/test/buildFHSEnv/default.nix
+++ b/pkgs/test/buildFHSEnv/default.nix
@@ -63,8 +63,13 @@ in {
   libtinfo = makeSharedObjectTest (getSharedObjectFromDebian "libedit.so.2.0.70" (fetchurl {
     url = "mirror://debian/pool/main/libe/libedit/libedit2_3.1-20221030-2_amd64.deb";
     hash = "sha256-HPFKvycW0yedsS0GV6VzfPcAdKHnHTvfcyBmJePInOY=";
-  })) (p: [
-    p.ncurses
+  })) (p: let
+    ncurses' = p.ncurses.overrideAttrs (old: {
+      configureFlags = old.configureFlags ++ [ "--with-termlib" ];
+      postFixup = "";
+    });
+  in [
+    (ncurses'.override { unicodeSupport = false; })
     p.libbsd
   ]);