diff --git a/lib/receiver/receiver_impl.h b/lib/receiver/receiver_impl.h
index 6831bf1..0b032db 100644
--- a/lib/receiver/receiver_impl.h
+++ b/lib/receiver/receiver_impl.h
@@ -195,7 +195,7 @@
          * @param burst_binary - content of the burst
          * @b_type - type of the burst
          */
-        void send_burst(burst_counter burst_nr, const unsigned char * burst_binary, uint8_t burst_type, unsigned int input_nr);
+        void send_burst(burst_counter burst_nr, const unsigned char * burst_binary, uint8_t burst_type, size_t input_nr);
 
         /**
          * Configures burst types in different channels