diff --git a/lib/core/utils/collect-results-from-frames.js b/lib/core/utils/collect-results-from-frames.js
index 8ad27569a7..f1d80fe3a1 100644
--- a/lib/core/utils/collect-results-from-frames.js
+++ b/lib/core/utils/collect-results-from-frames.js
@@ -37,7 +37,12 @@ axe.utils.sendCommandToFrame = function(node, parameters, resolve, reject) {
 	}, 500);
 
 	// send 'axe.ping' to the frame
-	axe.utils.respondable(win, 'axe.ping', null, undefined, function() {
+	axe.utils.respondable(win, 'axe.ping', null, undefined, function(
+		pingResponse
+	) {
+		if (!pingResponse || !pingResponse.axe === true) {
+			return;
+		}
 		clearTimeout(timeout);
 
 		// Give axe 60s (or user-supplied value) to respond to 'axe.start'
diff --git a/test/integration/full/frame-tested/frame-tested-echoes-postmessage.html b/test/integration/full/frame-tested/frame-tested-echoes-postmessage.html
new file mode 100644
index 0000000000..7c44b0d5f4
--- /dev/null
+++ b/test/integration/full/frame-tested/frame-tested-echoes-postmessage.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>frame-tested echoes postMessage test</title>
+		<meta charset="utf8" />
+		<link
+			rel="stylesheet"
+			type="text/css"
+			href="/node_modules/mocha/mocha.css"
+		/>
+		<script src="/node_modules/mocha/mocha.js"></script>
+		<script src="/node_modules/chai/chai.js"></script>
+		<script src="/axe.js"></script>
+		<script>
+			mocha.setup({
+				timeout: 10000,
+				ui: 'bdd'
+			});
+			var assert = chai.assert;
+		</script>
+	</head>
+	<body>
+		<iframe id="frame" src="frames/with-echo.html"></iframe>
+		<div id="mocha"></div>
+		<script src="/test/testutils.js"></script>
+		<script src="frame-tested-echoes-postmessage.js"></script>
+		<script src="/test/integration/adapter.js"></script>
+	</body>
+</html>
diff --git a/test/integration/full/frame-tested/frame-tested-echoes-postmessage.js b/test/integration/full/frame-tested/frame-tested-echoes-postmessage.js
new file mode 100644
index 0000000000..8842117b47
--- /dev/null
+++ b/test/integration/full/frame-tested/frame-tested-echoes-postmessage.js
@@ -0,0 +1,28 @@
+describe('frame-tested-echoes-postmessage test', function() {
+	'use strict';
+
+	var results;
+	before(function(done) {
+		axe.testUtils.awaitNestedLoad(function() {
+			axe.run(
+				{
+					runOnly: { type: 'rule', values: ['frame-tested'] },
+					checks: {
+						'frame-tested': { options: { isViolation: true } }
+					}
+				},
+				function(err, r) {
+					assert.isNull(err);
+					results = r;
+					done();
+				}
+			);
+		});
+	});
+
+	describe('result', function() {
+		it('should not error', function() {
+			assert.lengthOf(results.violations, 0);
+		});
+	});
+});
diff --git a/test/integration/full/frame-tested/frames/with-echo.html b/test/integration/full/frame-tested/frames/with-echo.html
new file mode 100644
index 0000000000..963328b9c8
--- /dev/null
+++ b/test/integration/full/frame-tested/frames/with-echo.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<title>Frame without axe-core</title>
+		<meta charset="utf8" />
+	</head>
+	<body>
+		<h1>Frame without axe-core</h1>
+		<script>
+			window.addEventListener(
+				'message',
+				event => {
+					window.top.postMessage(event.data);
+				},
+				false
+			);
+		</script>
+	</body>
+</html>
