diff --git a/docs/reference/slate/node.md b/docs/reference/slate/node.md
index 12714b30e..b628e91a5 100644
--- a/docs/reference/slate/node.md
+++ b/docs/reference/slate/node.md
@@ -367,7 +367,7 @@ Check whether a node exists in the tree by `path` or `key`.
 
 ### `isNodeInRange`
 
-`isNodeInRange(path: List|Array) => Boolean`
-`isNodeInRange(key: String) => Boolean`
+`isNodeInRange(path: List|Array, range: Range) => Boolean`
+`isNodeInRange(key: String, range: Range) => Boolean`
 
 Check whether a node is inside a `range`. This will return true for all [`Text`](./text.md) nodes inside the range and all ancestors of those [`Text`](./text.md) nodes up to this node.