diff --git a/dom/media/webaudio/AnalyserNode.cpp b/dom/media/webaudio/AnalyserNode.cpp
index 431dcef3de70..9d4ae5c72a50 100644
--- a/dom/media/webaudio/AnalyserNode.cpp
+++ b/dom/media/webaudio/AnalyserNode.cpp
@@ -117,7 +117,7 @@ already_AddRefed<AnalyserNode> AnalyserNode::Create(
 }
 
 AnalyserNode::AnalyserNode(AudioContext* aContext)
-    : AudioNode(aContext, 2, ChannelCountMode::Max,
+    : AudioNode(aContext, 1, ChannelCountMode::Max,
                 ChannelInterpretation::Speakers),
       mAnalysisBlock(2048),
       mMinDecibels(-100.),
diff --git a/testing/web-platform/meta/webaudio/the-audio-api/the-analysernode-interface/ctor-analyser.html.ini b/testing/web-platform/meta/webaudio/the-audio-api/the-analysernode-interface/ctor-analyser.html.ini
new file mode 100644
index 000000000000..3efadd35f858
--- /dev/null
+++ b/testing/web-platform/meta/webaudio/the-audio-api/the-analysernode-interface/ctor-analyser.html.ini
@@ -0,0 +1,10 @@
+[ctor-analyser.html]
+  [< [default constructor\] 1 out of 12 assertions were failed.]
+    expected: FAIL
+
+  [X node0.channelCount is not equal to 2. Got 1.]
+    expected: FAIL
+
+  [# AUDIT TASK RUNNER FINISHED: 1 out of 7 tasks were failed.]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/webaudio/the-audio-api/the-analysernode-interface/test-analysernode.html.ini b/testing/web-platform/meta/webaudio/the-audio-api/the-analysernode-interface/test-analysernode.html.ini
new file mode 100644
index 000000000000..6992ca5707d1
--- /dev/null
+++ b/testing/web-platform/meta/webaudio/the-audio-api/the-analysernode-interface/test-analysernode.html.ini
@@ -0,0 +1,7 @@
+[test-analysernode.html]
+  [Test AnalyserNode's ctor API]
+    expected: FAIL
+
+  [Test AnalyserNode API]
+    expected: FAIL
+