diff --git a/docs/mithril.deps.md b/docs/mithril.deps.md
index 109b73ba..78ad61b6 100644
--- a/docs/mithril.deps.md
+++ b/docs/mithril.deps.md
@@ -7,11 +7,9 @@
 
 ---
 
-This is a testing method to set the `window` object in an environment that does not have it (such as the server).
-It will normally _not_ be used in an application, as `window` is already available to Mithril.
-For normal (client-side) use of mithril, this method will not be used.
+This function overwrites the reference to the `window` object that is used internally by Mithril. It is useful for injecting a mock `window` dependency for the purposes of testing and for running Mithril in non-browser environments. The mock object used by Mithril for its own test suite [can be found in the development repo](https://github.com/lhorie/mithril.js/blob/next/tests/mock.js).
 
-It is used in Mithril's testing suite, and can be used to supply a mock `window` for browserless testing.
+By default, Mithril uses `window` itself as the dependency. Note that Mithril only uses the mock object for browser APIs such as the DOM API and `requestAnimationFrame`, but relies on the environment for ECMAScript features like `Object.keys`.
 
 ---
 
@@ -42,14 +40,14 @@ where:
 
 -	**Object Window**
 
-	This should be a mock of the `window` object.
+	This should be either `window` or a mock of the `window` object.
 
 	Mithril uses certain `window` methods that will need to be made available for complete test coverage, depending on your application:
 
 	- `window.document`
-	 - Mithril also uses certain methods on the DOM node object
+	- Mithril also uses certain methods on the DOM node object
 	- `window.requestAnimationFrame`/`window.cancelAnimationFrame`
-	 - Falls back to `window.setTimeout`/`window.clearTimeout`
+	- Falls back to `window.setTimeout`/`window.clearTimeout`
 	- `window.location`
 	- `window.history`
 	- `window.scrollTo`
@@ -57,5 +55,5 @@ where:
 
 -	**returns** Window
 
-	The returned window is the same as that passed in.
+	The returned window is the same as what is passed in.
 
diff --git a/mithril.d.ts b/mithril.d.ts
index ece7944a..4fcb5b87 100644
--- a/mithril.d.ts
+++ b/mithril.d.ts
@@ -20,7 +20,7 @@ interface MithrilStatic {
 	sync(promises: MithrilPromise[]): MithrilPromise;
 	startComputation(): void;
 	endComputation(): void;
-	deps(window: any): any;
+	deps(Object: any): Object;
 }
 
 interface MithrilVirtualElement {
diff --git a/tests/mock.js b/tests/mock.js
index 4cd2633f..beea4423 100644
--- a/tests/mock.js
+++ b/tests/mock.js
@@ -68,6 +68,7 @@ mock.window = new function() {
 		this.childNodes.splice(index, 1)
 		child.parentNode = null
 	}
+	//getElementsByTagName is only used by JSONP tests, it's not required by Mithril
 	window.document.getElementsByTagName = function(name){
 		name = name.toLowerCase();
 		var out = [];