diff --git a/src/renderers/dom/shared/ReactDOMComponent.js b/src/renderers/dom/shared/ReactDOMComponent.js
index 8f6cde4507..afe0f3f179 100644
--- a/src/renderers/dom/shared/ReactDOMComponent.js
+++ b/src/renderers/dom/shared/ReactDOMComponent.js
@@ -513,7 +513,7 @@ ReactDOMComponent.Mixin = {
    *
    * @internal
    * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
-   * @param {?ReactDOMComponent} the containing DOM component instance
+   * @param {?ReactDOMComponent} the parent component instance
    * @param {?object} info about the host container
    * @param {object} context
    * @return {string} The computed markup.
diff --git a/src/renderers/native/ReactNativeBaseComponent.js b/src/renderers/native/ReactNativeBaseComponent.js
index 20dfaa542b..0a0c8435b7 100644
--- a/src/renderers/native/ReactNativeBaseComponent.js
+++ b/src/renderers/native/ReactNativeBaseComponent.js
@@ -171,8 +171,10 @@ ReactNativeBaseComponent.Mixin = {
   },
 
   /**
-   * @param {string} rootID Root ID of this subtree.
-   * @param {Transaction} transaction For creating/updating.
+   * @param {ReactNativeReconcileTransaction} transaction
+   * @param {?ReactNativeBaseComponent} the parent component instance
+   * @param {?object} info about the host container
+   * @param {object} context
    * @return {string} Unique iOS view tag.
    */
   mountComponent: function(transaction, hostParent, hostContainerInfo, context) {