diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c
index f66766fe752a..2a8d32f32be2 100644
--- a/sys/compat/linprocfs/linprocfs.c
+++ b/sys/compat/linprocfs/linprocfs.c
@@ -474,8 +474,8 @@ linprocfs_doprocstat(PFS_FILL_ARGS)
 		state = 'R';
 
 		if (ratelimit == 0) {
-			printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%d, mapping to R\n",
-			    kp.ki_stat, sizeof(linux_state));
+			printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%jd, mapping to R\n",
+			    kp.ki_stat, (intmax_t)sizeof(linux_state));
 			++ratelimit;
 		}
 	} else