diff --git a/underscore-min.js b/underscore-min.js
index 0e6235f5d..dcc64d912 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 99e738419..4a85af41f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -293,7 +293,7 @@
   // item in an array, or -1 if the item is not included in the array.
   _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
-    for (i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
+    for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };