diff --git a/spec/negotiation.html b/spec/negotiation.html
index 3987b4ee..180ffcc3 100644
--- a/spec/negotiation.html
+++ b/spec/negotiation.html
@@ -353,7 +353,7 @@
PartitionPattern ( _pattern_ )
1. Set _nextIndex_ to _endIndex_ + 1.
1. Set _beginIndex_ to ! Call(%String.prototype.indexOf%, _pattern_, « *"{"*, _nextIndex_ »).
1. If _nextIndex_ is less than _length_, then
- 1. Let _literal_ be the substring of _pattern_ from position _nextIndex_, exclusive, to position _length_, exclusive.
+ 1. Let _literal_ be the substring of _pattern_ from position _nextIndex_, inclusive, to position _length_, exclusive.
1. Add new part record { [[Type]]: *"literal"*, [[Value]]: _literal_ } as a new element of the list _result_.
1. Return _result_.