1 files changed, 1 insertions, 1 deletions

diff --git a/net/batman-adv/ring_buffer.h b/net/batman-adv/ring_buffer.h
index 0395b2741864..7cdfe62b657c 100644
--- a/net/batman-adv/ring_buffer.h
+++ b/net/batman-adv/ring_buffer.h
@@ -23,6 +23,6 @@
 #define _NET_BATMAN_ADV_RING_BUFFER_H_
 
 void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value);
-uint8_t ring_buffer_avg(uint8_t lq_recv[]);
+uint8_t ring_buffer_avg(const uint8_t lq_recv[]);
 
 #endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */