diff --git a/main.c b/main.c
index 0b95e50..7bc4e99 100644
--- a/main.c
+++ b/main.c
@@ -42,16 +42,16 @@ void getutmp( int pid, char user[], char host_ip[], char host_ipv6[], time_t * t
 			sprintf(host_ip, "%s", utmp->ut_host);	//got ip of origin
 			if((utmp->ut_addr_v6[1] && utmp->ut_addr_v6[2] && utmp->ut_addr_v6[3]) == 0)
 			{
-				ipv4 =  (utmp->ut_addr_v6[0] & 0xff000000) >> 6;
+				ipv4 =  (utmp->ut_addr_v6[0] & 0x00000000ff000000) >> 6;
 				sprintf( str, "%x.", ipv4);
 				strcat(host_ip, str);
-				ipv4 =  (utmp->ut_addr_v6[0] & 0x00ff0000) >> 4;
+				ipv4 =  (utmp->ut_addr_v6[0] & 0x0000000000ff0000) >> 4;
 				sprintf( str, "%x.", ipv4);
 				strcat(host_ip, str);
-				ipv4 =  (utmp->ut_addr_v6[0] & 0x0000ff00) >> 2;
+				ipv4 =  (utmp->ut_addr_v6[0] & 0x000000000000ff00) >> 2;
 				sprintf( str, "%x.", ipv4);
 				strcat(host_ip, str);
-				ipv4 =  utmp->ut_addr_v6[0] & 0x000000ff;
+				ipv4 =  utmp->ut_addr_v6[0] & 0x00000000000000ff;
 				sprintf( str, "%x", ipv4);
 				strcat(host_ip, str);
 
@@ -60,10 +60,10 @@ void getutmp( int pid, char user[], char host_ip[], char host_ipv6[], time_t * t
 				for (x=0;x<4;x++)
 				{
 
-					ipv6_1 = (utmp->ut_addr_v6[x] & 0xffff0000) >> 4;
+					ipv6_1 = (utmp->ut_addr_v6[x] & 0xffffffff00000000) >> 8;
 					sprintf( str, "%x:", ipv6_1);
 					strcat(host_ipv6, str);
-					ipv6_2 = utmp->ut_addr_v6[x] & 0x0000ffff;
+					ipv6_2 = utmp->ut_addr_v6[x] & 0x00000000ffffffff;
 					sprintf( str, "%x:", ipv6_1);
 					strcat(host_ipv6, str);
 				}