diff --git a/utils/nfsstat/nfsstat.c b/utils/nfsstat/nfsstat.c
index 436d407..8177f2f 100644
--- a/utils/nfsstat/nfsstat.c
+++ b/utils/nfsstat/nfsstat.c
@@ -465,7 +465,7 @@ print_numbers(const char *hdr, unsigned int *info, unsigned int nr)
 
 	fputs(hdr, stdout);
 	for (i = 0; i < nr; i++)
-		printf("%s%-8d", i? "   " : "", info[i]);
+		printf("%s%-8u", i? "   " : "", info[i]);
 	printf("\n");
 }
 
@@ -488,7 +488,7 @@ print_callstats(const char *hdr, const char **names,
 		printf("\n");
 		for (j = 0; j < 6 && i + j < nr; j++) {
 			pct = ((unsigned long long) info[i+j]*100)/total;
-			printf("%-8d%3llu%% ", info[i+j], pct);
+			printf("%-8u%3llu%% ", info[i+j], pct);
 		}
 		printf("\n");
 	}
@@ -530,7 +530,7 @@ parse_statfile(const char *name, struct statinfo *statp)
 		for (i = 0; i < cnt; i++) {
 			if (!(sp = strtok(NULL, " \t")))
 				break;
-			ip->valptr[i] = atoi(sp);
+			ip->valptr[i] = (unsigned int) strtoul(sp, NULL, 0);
 			total += ip->valptr[i];
 		}
 		ip->valptr[i] = total;