diff --git a/include/btstack/utils.h b/include/btstack/utils.h
index 3454ead3e..7d1bcf082 100644
--- a/include/btstack/utils.h
+++ b/include/btstack/utils.h
@@ -106,7 +106,7 @@ void net_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
 
 void hexdump(void *data, int size);
 void printUUID(uint8_t *uuid);
-void print_bd_addr(bd_addr_t addr);
+char * bd_addr_to_str(bd_addr_t addr);
 int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr);
 
 uint8_t crc8_check(uint8_t *data, uint16_t len, uint8_t check_sum);