diff --git a/thrust/functional.h b/thrust/functional.h
index b0e98e1f..f5da333c 100644
--- a/thrust/functional.h
+++ b/thrust/functional.h
@@ -1645,7 +1645,7 @@ struct binary_negate
* \return A new object, npred such that npred(x,y) always returns
* the same value as !pred(x,y).
*
- * \tparam Binary Predicate is a model of Adaptable Binary Predicate.
+ * \tparam Binary Predicate is a model of Adaptable Binary Predicate.
*
* \see binary_negate
* \see not1