diff --git a/ed25519.js b/ed25519.js
index 7be012b..9553eb0 100644
--- a/ed25519.js
+++ b/ed25519.js
@@ -26,8 +26,8 @@ function Z(o, a, b) {
 
 function M(o, a, b) {
   var v, c,
-     t0 = 0,  t1 = 0,  t2 = 0,  t3 = 0,  t4 = 0,  t5 = 0,  t6 = 0,  t7 = 0,
-     t8 = 0,  t9 = 0, t10 = 0, t11 = 0, t12 = 0, t13 = 0, t14 = 0, t15 = 0,
+    t0 = 0,  t1 = 0,  t2 = 0,  t3 = 0,  t4 = 0,  t5 = 0,  t6 = 0,  t7 = 0,
+    t8 = 0,  t9 = 0, t10 = 0, t11 = 0, t12 = 0, t13 = 0, t14 = 0, t15 = 0,
     t16 = 0, t17 = 0, t18 = 0, t19 = 0, t20 = 0, t21 = 0, t22 = 0, t23 = 0,
     t24 = 0, t25 = 0, t26 = 0, t27 = 0, t28 = 0, t29 = 0, t30 = 0,
     b0 = b[0],
@@ -471,6 +471,7 @@ module.exports = {
   inv25519,
   gf0,
   gf1,
+  _9,
   _121665,
   D,
   D2,