diff --git a/pkgs/shells/mksh/default.nix b/pkgs/shells/mksh/default.nix
index 696777c7f1f..dde890a022d 100644
--- a/pkgs/shells/mksh/default.nix
+++ b/pkgs/shells/mksh/default.nix
@@ -43,4 +43,8 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ AndersonTorres nckx ];
     platforms = platforms.unix;
   };
+
+  passthru = {
+    shellPath = "/bin/mksh";
+  };
 }