diff --git a/changelogs/unreleased/1199-dark64 b/changelogs/unreleased/1199-dark64
index f2ab6066..11f3703d 100644
--- a/changelogs/unreleased/1199-dark64
+++ b/changelogs/unreleased/1199-dark64
@@ -1 +1 @@
-Add `backend` option in `zokrates-js`, bring back bellman, add a console writer to support printing logs to console
\ No newline at end of file
+Add `backend` option in `zokrates-js`, bring back bellman, add a log writer to support printing logs in js
\ No newline at end of file
diff --git a/zokrates_book/src/toolbox/zokrates_js.md b/zokrates_book/src/toolbox/zokrates_js.md
index a4d4cde6..953e662e 100644
--- a/zokrates_book/src/toolbox/zokrates_js.md
+++ b/zokrates_book/src/toolbox/zokrates_js.md
@@ -128,12 +128,13 @@ const fileSystemResolver = (from, to) => {
 };
 ```
 
-##### computeWitness(artifacts, args)
+##### computeWitness(artifacts, args[, options])
 Computes a valid assignment of the variables, which include the results of the computation.
 
 Parameters:
 * `artifacts` - Compilation artifacts
 * `args` - Array of arguments (eg. `["1", "2", true]`)
+* `options` - Computation options
 
 Returns: `ComputationResult`