diff --git a/src/preact.d.ts b/src/preact.d.ts
index 3413ff6cb1..ffc11a13e7 100644
--- a/src/preact.d.ts
+++ b/src/preact.d.ts
@@ -421,6 +421,7 @@ declare global {
 		interface DOMAttributes extends preact.PreactDOMAttributes {
 			// Image Events
 			onLoad?: GenericEventHandler;
+			onError?: GenericEventHandler;
 			onLoadCapture?: GenericEventHandler;
 
 			// Clipboard Events
diff --git a/src/vdom/component.js b/src/vdom/component.js
index 64fd32970e..f702fa1ba1 100644
--- a/src/vdom/component.js
+++ b/src/vdom/component.js
@@ -189,7 +189,7 @@ export function renderComponent(component, renderMode, mountAll, isChild) {
 	}
 
 	if (!isUpdate || mountAll) {
-		mounts.unshift(component);
+		mounts.push(component);
 	}
 	else if (!skip) {
 		// Ensure that pending componentDidMount() hooks of child components
diff --git a/src/vdom/diff.js b/src/vdom/diff.js
index a2db0f90fd..ff32fbb533 100644
--- a/src/vdom/diff.js
+++ b/src/vdom/diff.js
@@ -24,11 +24,13 @@ let hydrating = false;
 
 /** Invoke queued componentDidMount lifecycle methods */
 export function flushMounts() {
-	let c;
-	while ((c=mounts.pop())) {
+	let c, i;
+	for (i=0; i<mounts.length; ++i) {
+		c = mounts[i];
 		if (options.afterMount) options.afterMount(c);
 		if (c.componentDidMount) c.componentDidMount();
 	}
+	mounts.length = 0;
 }