diff --git a/Libraries/LibWeb/WebAudio/AudioParam.cpp b/Libraries/LibWeb/WebAudio/AudioParam.cpp
index db6bd8276fc..8950e41a182 100644
--- a/Libraries/LibWeb/WebAudio/AudioParam.cpp
+++ b/Libraries/LibWeb/WebAudio/AudioParam.cpp
@@ -88,7 +88,7 @@ WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::set_value_at_time(float val
     (void)value;
     (void)start_time;
     dbgln("FIXME: Implement AudioParam::set_value_at_time");
-    return GC::Ref<AudioParam> { *this };
+    return GC::Ref { *this };
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioparam-linearramptovalueattime
@@ -96,7 +96,8 @@ WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::linear_ramp_to_value_at_tim
 {
     (void)value;
     (void)end_time;
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioParam::linear_ramp_to_value_at_time"_string);
+    dbgln("FIXME: Implement AudioParam::linear_ramp_to_value_at_time");
+    return GC::Ref { *this };
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioparam-exponentialramptovalueattime
@@ -104,7 +105,8 @@ WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::exponential_ramp_to_value_a
 {
     (void)value;
     (void)end_time;
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioParam::exponential_ramp_to_value_at_time"_string);
+    dbgln("FIXME: Implement AudioParam::exponential_ramp_to_value_at_time");
+    return GC::Ref { *this };
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioparam-settargetattime
@@ -113,7 +115,8 @@ WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::set_target_at_time(float ta
     (void)target;
     (void)start_time;
     (void)time_constant;
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioParam::set_target_at_time"_string);
+    dbgln("FIXME: Implement AudioParam::set_target_at_time");
+    return GC::Ref { *this };
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioparam-setvaluecurveattime
@@ -122,21 +125,24 @@ WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::set_value_curve_at_time(Spa
     (void)values;
     (void)start_time;
     (void)duration;
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioParam::set_value_curve_at_time"_string);
+    dbgln("FIXME: Implement AudioParam::set_value_curve_at_time");
+    return GC::Ref { *this };
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioparam-cancelscheduledvalues
 WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::cancel_scheduled_values(double cancel_time)
 {
     (void)cancel_time;
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioParam::cancel_scheduled_values"_string);
+    dbgln("FIXME: Implement AudioParam::cancel_scheduled_values");
+    return GC::Ref { *this };
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioparam-cancelandholdattime
 WebIDL::ExceptionOr<GC::Ref<AudioParam>> AudioParam::cancel_and_hold_at_time(double cancel_time)
 {
     (void)cancel_time;
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioParam::cancel_and_hold_at_time"_string);
+    dbgln("FIXME: Implement AudioParam::cancel_and_hold_at_time");
+    return GC::Ref { *this };
 }
 
 void AudioParam::initialize(JS::Realm& realm)
diff --git a/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.cpp b/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.cpp
index 83b4469a1e7..90479619224 100644
--- a/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.cpp
+++ b/Libraries/LibWeb/WebAudio/AudioScheduledSourceNode.cpp
@@ -50,7 +50,8 @@ WebIDL::ExceptionOr<void> AudioScheduledSourceNode::start(double when)
     // FIXME: 4. Queue a control message to start the AudioScheduledSourceNode, including the parameter values in the message.
     // FIXME: 5. Send a control message to the associated AudioContext to start running its rendering thread only when all the following conditions are met:
 
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioScheduledSourceNode::start"_string);
+    dbgln("FIXME: Implement AudioScheduledSourceNode::start");
+    return {};
 }
 
 // https://webaudio.github.io/web-audio-api/#dom-audioscheduledsourcenode-stop
@@ -67,7 +68,8 @@ WebIDL::ExceptionOr<void> AudioScheduledSourceNode::stop(double when)
 
     // FIXME: 3. Queue a control message to stop the AudioScheduledSourceNode, including the parameter values in the message.
 
-    return WebIDL::NotSupportedError::create(realm(), "FIXME: Implement AudioScheduledSourceNode::stop"_string);
+    dbgln("FIXME: Implement AudioScheduledSourceNode::stop");
+    return {};
 }
 
 void AudioScheduledSourceNode::initialize(JS::Realm& realm)
diff --git a/Tests/LibWeb/TestConfig.ini b/Tests/LibWeb/TestConfig.ini
index 9f52a2eb34b..57b93909d6c 100644
--- a/Tests/LibWeb/TestConfig.ini
+++ b/Tests/LibWeb/TestConfig.ini
@@ -316,3 +316,5 @@ Text/input/wpt-import/IndexedDB/idbfactory_open.any.html
 ; Slow on macOS. Takes ~200ms per request to the echo server.
 ; https://github.com/LadybirdBrowser/ladybird/issues/4850
 Text/input/XHR/XMLHttpRequest-override-mimetype-blob.html
+
+Text/input/wpt-import/webaudio/the-audio-api/the-periodicwave-interface/periodicWave.html
diff --git a/Tests/LibWeb/Text/expected/wpt-import/webaudio/the-audio-api/the-audioparam-interface/audioparam-nominal-range.txt b/Tests/LibWeb/Text/expected/wpt-import/webaudio/the-audio-api/the-audioparam-interface/audioparam-nominal-range.txt
index 13dd52c3f5a..5d22edbe9a2 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/webaudio/the-audio-api/the-audioparam-interface/audioparam-nominal-range.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/webaudio/the-audio-api/the-audioparam-interface/audioparam-nominal-range.txt
@@ -2,8 +2,8 @@ Harness status: OK
 
 Found 317 tests
 
-309 Pass
-8 Fail
+312 Pass
+5 Fail
 Pass	# AUDIT TASK RUNNER STARTED.
 Pass	Executing "initialize"
 Pass	Executing "Offline createGain"
@@ -318,6 +318,6 @@ Pass	> [verifyTests]
 Pass	  Number of nodes not tested : 0
 Pass	< [verifyTests] All assertions passed. (total 1 assertions)
 Pass	> [automation] 
-Fail	X Test automations (check console logs) incorrectly threw NotSupportedError: "FIXME: Implement AudioParam::linear_ramp_to_value_at_time".
-Fail	< [automation] 1 out of 1 assertions were failed.
-Fail	# AUDIT TASK RUNNER FINISHED: 1 out of 24 tasks were failed.
\ No newline at end of file
+Pass	  Test automations (check console logs) did not throw an exception.
+Pass	< [automation] All assertions passed. (total 1 assertions)
+Pass	# AUDIT TASK RUNNER FINISHED: 24 tasks ran successfully.
\ No newline at end of file