--- a/src/dhcdrop.h	2022-08-23 09:57:15.594679182 +0300
+++ b/src/dhcdrop.h	2022-08-23 09:57:31.034678048 +0300
@@ -207,9 +207,9 @@
 inline void replace_semicolons(char * str_ether);
 
 /* Print ethernet address as hex-digits string */
-inline void print_ether(const uint8_t * ether_addr);
+static void print_ether(const uint8_t * ether_addr);
 
 /* Create random ethernet address and store to string 'str_mac_addr' */
-inline void rand_ether_addr(char * str_mac_addr);
+static void rand_ether_addr(char * str_mac_addr);
 
 #endif	/* ifdef DHCDROP_H*/
--- a/src/dhcdrop.c	2022-08-23 09:57:09.522679628 +0300
+++ b/src/dhcdrop.c	2022-08-23 09:57:47.810676815 +0300
@@ -1879,14 +1879,14 @@
 	}
 }
 
-inline void print_ether(const uint8_t * ether_addr)
+static void print_ether(const uint8_t * ether_addr)
 {
 	int i;
 	for(i = 0; i < ETH_ALEN; ++i)
 		printf((i == (ETH_ALEN - 1) ) ? "%02X" :"%02X:", ether_addr[i]);
 }
 
-inline void rand_ether_addr(char * str_mac_addr) /* Minimal size of str_mac_addr must be STR_MAC_LEN (18) */
+static void rand_ether_addr(char * str_mac_addr) /* Minimal size of str_mac_addr must be STR_MAC_LEN (18) */
 {
     /* Fill first byte */
     strncat(str_mac_addr, "00:", 3);