diff --git a/fs-watcher.c b/fs-watcher.c
index 726ce7d..1fe9ce8 100644
--- a/fs-watcher.c
+++ b/fs-watcher.c
@@ -58,7 +58,7 @@ static void handle_events(int fafd, int mount_fd) {
 				clock_gettime(CLOCK_MONOTONIC, &mono);
 				clock_gettime(CLOCK_REALTIME, &wall);
 
-				fprintf(stdout, "{\"ts\": [%i, %i, %i, %i]", wall.tv_sec, wall.tv_nsec, mono.tv_sec, mono.tv_nsec);
+				fprintf(stdout, "{\"ts\": [%li, %li, %li, %li]", wall.tv_sec, wall.tv_nsec, mono.tv_sec, mono.tv_nsec);
 
 				char *ptr = (char *)(metadata + 1);
 				char *end = (char *)metadata + metadata->event_len;
@@ -98,7 +98,7 @@ static void handle_events(int fafd, int mount_fd) {
 				}
 
 				if (entry_index++) { fprintf(stdout, ", "); }
-				fprintf(stdout, ", \"mask\": %i}\n", metadata->mask);
+				fprintf(stdout, ", \"mask\": %lli}\n", metadata->mask);
 
 				metadata = FAN_EVENT_NEXT(metadata, size);