diff --git a/main.c b/main.c
index 7ab5b36..f9d9138 100644
--- a/main.c
+++ b/main.c
@@ -45,13 +45,13 @@ void getutmp( int pid, char user[], char host_ip[], char host_ipv6[], time_t * t
 				ipv4 =  utmp->ut_addr_v6[0] & 0x000000ff;
 				sprintf( str, "%x.", ipv4);
 				strcat(host_ip, str);
-				ipv4 =  utmp->ut_addr_v6[0] & 0x0000ff00;
+				ipv4 =  (utmp->ut_addr_v6[0] & 0x0000ff00) >> 2;
 				sprintf( str, "%x.", ipv4);
 				strcat(host_ip, str);
-				ipv4 =  utmp->ut_addr_v6[0] & 0x00ff0000;
+				ipv4 =  (utmp->ut_addr_v6[0] & 0x00ff0000) >> 4;
 				sprintf( str, "%x.", ipv4);
 				strcat(host_ip, str);
-				ipv4 =  utmp->ut_addr_v6[0] & 0xff000000;
+				ipv4 =  (utmp->ut_addr_v6[0] & 0xff000000) >> 6;
 				sprintf( str, "%x", ipv4);
 				strcat(host_ip, str);
 
@@ -60,7 +60,7 @@ 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;
+					ipv6_1 = (utmp->ut_addr_v6[x] & 0xffff0000) >> 4;
 					sprintf( str, "%x:", ipv6_1);
 					strcat(host_ipv6, str);
 					ipv6_2 = utmp->ut_addr_v6[x] & 0x0000ffff;