1 files changed, 3 insertions, 1 deletions

diff --git a/ot_sync.h b/ot_sync.h
index 0fe0739..b6964fa 100644
--- a/ot_sync.h
+++ b/ot_sync.h
@@ -6,12 +6,14 @@
 #ifndef OT_SYNC_H__
 #define OT_SYNC_H__
 
+#include <stdint.h>
+
 #ifdef WANT_SYNC_BATCH
 enum { SYNC_IN, SYNC_OUT };
 
 void sync_init();
 void sync_deinit();
-void sync_deliver(int64 socket);
+void sync_deliver(int64_t socket);
 
 int  add_changeset_to_tracker(uint8_t *data, size_t len);
 #else