Index: tools/diag/prtblknos/prtblknos.c
===================================================================
--- tools/diag/prtblknos/prtblknos.c
+++ tools/diag/prtblknos/prtblknos.c
@@ -97,14 +97,14 @@
 			printf("empty file\n");
 			return;
 		}
-		printf("regular file, size %ld\n", size);
+		printf("regular file, size %jd\n", (uintmax_t)size);
 		break;
 	case IFDIR:
 		if (size == 0) {
 			printf("empty directory\n");
 			return;
 		}
-		printf("directory, size %ld\n", size);
+		printf("directory, size %jd\n", (uintmax_t)size);
 		break;
 	}
 	numblks = howmany(size, fs->fs_bsize);