diff --git a/lib/fast_gettext/vendor/mofile.rb b/lib/fast_gettext/vendor/mofile.rb
index c7514b2..9743de6 100644
--- a/lib/fast_gettext/vendor/mofile.rb
+++ b/lib/fast_gettext/vendor/mofile.rb
@@ -179,7 +179,6 @@ def next_prime(seed)
       # 1986, 1987 Bell Telephone Laboratories, Inc.]
       def hash_string(str)
         hval = 0
-        i = 0
         str.each_byte do |b|
           break if b == '\0'
           hval <<= 4