diff --git a/sanei/sanei_usb.c b/sanei/sanei_usb.c index 79745f0..e706dd4 100644
--- a/sanei/sanei_usb.c
+++ b/sanei/sanei_usb.c
@@ -1236,6 +1236,9 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
              /* Loop through all of the alternate settings */
              for (a = 0; a < dev->config[c].interface[i].num_altsetting; a++)
                {
+                  /* For config[0], seek only interfaces found in sanei_usb_init */
+                  if (c == 0 && i != devices[devcount].interface_nr)
+                    continue;
 
                  DBG (5, "sanei_usb_open: configuration nr: %d\n", c);
                  DBG (5, "sanei_usb_open:     interface nr: %d\n", i);
@@ -1540,6 +1543,10 @@ sanei_usb_open (SANE_String_Const devname, SANE_Int * dn)
              /* Loop through all of the alternate settings */
              for (a = 0; a < config->interface[i].num_altsetting; a++)
                {
+                  /* For config[0], seek only interfaces found in sanei_usb_init */
+                  if (c == 0 && i != devices[devcount].interface_nr)
+                    continue;
+
                  const struct libusb_interface_descriptor *interface;
 
                  DBG (5, "sanei_usb_open: configuration nr: %d\n", c);