diff --git a/lib/Pico-PIO-USB b/lib/Pico-PIO-USB
index 7d8df447c..b507f95de 160000
--- a/lib/Pico-PIO-USB
+++ b/lib/Pico-PIO-USB
@@ -1 +1 @@
-Subproject commit 7d8df447c4c5d0515f2ab9f10b28ac92d7cc78df
+Subproject commit b507f95de457d5dc14fb15fd6481ef748c6e3342
diff --git a/src/portable/raspberrypi/pio_usb/hcd_pio_usb.c b/src/portable/raspberrypi/pio_usb/hcd_pio_usb.c
index dc52870e9..c2ac2c706 100644
--- a/src/portable/raspberrypi/pio_usb/hcd_pio_usb.c
+++ b/src/portable/raspberrypi/pio_usb/hcd_pio_usb.c
@@ -50,9 +50,8 @@ static pio_usb_configuration_t pio_host_config = PIO_USB_DEFAULT_CONFIG;
 //--------------------------------------------------------------------+
 bool hcd_init(uint8_t rhport)
 {
-  // To run USB SOF interrupt in core1, create alarm pool in core1.
-  pio_host_config.alarm_pool = (void*)alarm_pool_create(2, 1);
-  (void) pio_usb_host_init(&pio_host_config);
+  // To run USB SOF interrupt in core1, call this init in core1
+  pio_usb_host_controller_init(&pio_host_config);
 
   return true;
 }