diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 40a30bb..ae54f77 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -559,7 +559,7 @@
 	memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
 
 	/* copy second part */
-	memcpy(data_ptr + del_if_num * chunk_size,
+	memcpy((char *)data_ptr + del_if_num * chunk_size,
 	       orig_node->bcast_own + ((del_if_num + 1) * chunk_size),
 	       (max_if_num - del_if_num) * chunk_size);
 
@@ -579,7 +579,7 @@
 	memcpy(data_ptr, orig_node->bcast_own_sum,
 	       del_if_num * sizeof(uint8_t));
 
-	memcpy(data_ptr + del_if_num * sizeof(uint8_t),
+	memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t),
 	       orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)),
 	       (max_if_num - del_if_num) * sizeof(uint8_t));