diff --git a/src/crypto/hash/md5.js b/src/crypto/hash/md5.js
index b0261d49..a6cd008e 100644
--- a/src/crypto/hash/md5.js
+++ b/src/crypto/hash/md5.js
@@ -132,7 +132,6 @@ function ii(a, b, c, d, x, s, t) {
 }
 
 function md51(s) {
-  txt = '';
   var n = s.length,
     state = [1732584193, -271733879, -1732584194, 271733878],
     i;