diff --git a/src/lib.rs b/src/lib.rs
index 257a02c..75462a6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,9 +38,11 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
 
                 // If ep_aadr not provided, or current endpoint is allocated, try to find next free endpoint, otherwise return UsbError. //
                 _ => {
-                    let index = self.ep_table[1..]
+                    let index = self
+                        .ep_table
                         .iter()
                         .enumerate()
+                        .skip(1)
                         .find(|(index, ep)| {
                             !ep.is_allocated && max_packet_size <= ENDPOINTS_ALLOC_LAYOUT[*index]
                         })