diff --git a/externals/ext-libusb b/externals/ext-libusb
index e1f4ac147..c4d237a58 160000
--- a/externals/ext-libusb
+++ b/externals/ext-libusb
@@ -1 +1 @@
-Subproject commit e1f4ac1472bdf6aab27f8b836a2f47df85465bac
+Subproject commit c4d237a5803900b78dcc2961d057fcc8a678d3fd
diff --git a/src/core/libraries/usbd/usbd.h b/src/core/libraries/usbd/usbd.h
index 0841036a4..3c20bdce4 100644
--- a/src/core/libraries/usbd/usbd.h
+++ b/src/core/libraries/usbd/usbd.h
@@ -27,7 +27,7 @@ using SceUsbdDeviceDescriptor = libusb_device_descriptor;
 using SceUsbdConfigDescriptor = libusb_config_descriptor;
 using SceUsbdTransfer = libusb_transfer;
 using SceUsbdControlSetup = libusb_control_setup;
-using SceUsbdTransferCallback = void (*)(SceUsbdTransfer* transfer);
+using SceUsbdTransferCallback = void PS4_SYSV_ABI (*)(SceUsbdTransfer* transfer);
 
 enum class SceUsbdSpeed : u32 {
     UNKNOWN = 0,