--- a/src/bwmon.c
+++ b/src/bwmon.c
@@ -408,7 +408,7 @@ bool_t
 print_uptime(float * uptime) 
 {
 	unsigned int tmp = 0, hour = 0, min = 0, sec = 0;
-	char hostname[30];
+	char hostname[50];
 
 	tmp = (uint)(*uptime);
 	sec = tmp % 60;
@@ -418,7 +418,7 @@ print_uptime(float * uptime)
 	hour = tmp % 24;
 	tmp = (tmp - hour) / 24;
 
-	if (gethostname(hostname, strlen(hostname)) != 0)
+	if (gethostname(hostname, sizeof(hostname)) != 0)
 		strcpy(hostname, "System");
 
 	printw("\n%s uptime: %u day%c %u hour%c %u minutes and %u seconds\n",