diff --git a/include/git2/filter.h b/include/git2/filter.h
index cf6c5f59d..c056fc9ca 100644
--- a/include/git2/filter.h
+++ b/include/git2/filter.h
@@ -95,7 +95,7 @@ typedef struct {
  * A filter that can transform file data
  *
  * This represents a filter that can be used to transform or even replace
- * file data.  Libgit2 includes one built in filter and it is possible to
+ * file data.  libgit2 includes two built in filters and it is possible to
  * write your own (see git2/sys/filter.h for information on that).
  *
  * The two builtin filters are: