diff --git a/scan.c b/scan.c
index 9e95d47a..02d88177 100644
--- a/scan.c
+++ b/scan.c
@@ -164,7 +164,7 @@ static void scan_file(struct snapraid_scan* scan, struct snapraid_state* state,
 				printf("warning: Ignored hardlink '%s%s'\n", disk->dir, sub);
 				return;
 			} else {
-				fprintf(stderr, "Internal inode '%"PRIu64"' inconsistency for file '%s%s'\n", st->st_ino, disk->dir, sub);
+				fprintf(stderr, "Internal inode '%"PRIu64"' inconsistency for file '%s%s'\n", (uint64_t)st->st_ino, disk->dir, sub);
 				exit(EXIT_FAILURE);
 			}
 		}
diff --git a/sync.c b/sync.c
index 584ceb77..afdb84a2 100644
--- a/sync.c
+++ b/sync.c
@@ -213,7 +213,7 @@ static int state_sync_process(struct snapraid_state* state, struct snapraid_pari
 					|| STAT_NSEC(&handle[j].st) != block_file_get(block)->mtime_nsec)
 					fprintf(stderr, "Unexpected time change at file '%s'.\n", handle[j].path);
 				else
-					fprintf(stderr, "Unexpected inode change from %"PRIu64" to %"PRIu64" at file '%s'.\n", block_file_get(block)->inode, handle[j].st.st_ino, handle[j].path);
+					fprintf(stderr, "Unexpected inode change from %"PRIu64" to %"PRIu64" at file '%s'.\n", block_file_get(block)->inode, (uint64_t)handle[j].st.st_ino, handle[j].path);
 				fprintf(stderr, "WARNING! You cannot modify files during a sync. Rerun the sync command when finished.\n");
 
 				++unrecoverable_error;