diff --git a/tests/subsys/usb/device_next/build_all.overlay b/tests/subsys/usb/device_next/build_all.overlay
index 87c419ced8b..bafd8f94aaa 100644
--- a/tests/subsys/usb/device_next/build_all.overlay
+++ b/tests/subsys/usb/device_next/build_all.overlay
@@ -12,6 +12,7 @@
 	uac2_headphones: usb_audio2 {
 		compatible = "zephyr,uac2";
 		status = "okay";
+		full-speed;
 		audio-function = <AUDIO_FUNCTION_OTHER>;
 
 		uac_aclk: aclk {
diff --git a/tests/subsys/usb/uac2/app.overlay b/tests/subsys/usb/uac2/app.overlay
index 4e3409860c7..799d9e40d43 100644
--- a/tests/subsys/usb/uac2/app.overlay
+++ b/tests/subsys/usb/uac2/app.overlay
@@ -10,6 +10,7 @@
 	uac2_headset: usb_audio2 {
 		compatible = "zephyr,uac2";
 		status = "okay";
+		full-speed;
 		audio-function = <AUDIO_FUNCTION_HEADSET>;
 
 		uac_aclk: aclk {