2 files changed, 5 insertions, 5 deletions
diff --git a/host/include/uhd/transport/usb_control.hpp b/host/include/uhd/transport/usb_control.hpp
index f23ad5247..786bd0815 100644
--- a/host/include/uhd/transport/usb_control.hpp
+++ b/host/include/uhd/transport/usb_control.hpp
@@ -36,7 +36,7 @@ public:
      * \param handle a device handle that uniquely identifies a USB device
      * \param interface the USB interface number for the control transport
      */
-    static sptr make(usb_device_handle::sptr handle, const size_t interface);
+    static sptr make(usb_device_handle::sptr handle, const int interface);
 
     /*!
      * Submit a USB device request:
diff --git a/host/include/uhd/transport/usb_zero_copy.hpp b/host/include/uhd/transport/usb_zero_copy.hpp
index ae1926e1b..eb28040b6 100644
--- a/host/include/uhd/transport/usb_zero_copy.hpp
+++ b/host/include/uhd/transport/usb_zero_copy.hpp
@@ -55,10 +55,10 @@ public:
      */
     static sptr make(
         usb_device_handle::sptr handle,
-        const size_t recv_interface,
-        const size_t recv_endpoint,
-        const size_t send_interface,
-        const size_t send_endpoint,
+        const int recv_interface,
+        const unsigned char recv_endpoint,
+        const int send_interface,
+        const unsigned char send_endpoint,
         const device_addr_t &hints = device_addr_t()
     );
 };