diff --git a/replay/replay-char.c b/replay/replay-char.c
index a31aded032e7b99b1f6ff067d434084b0a8d2a9c..41e353248cb15c62b097e69c7a690d94e11cfedc 100644
--- a/replay/replay-char.c
+++ b/replay/replay-char.c
@@ -127,8 +127,8 @@ int replay_char_read_all_load(uint8_t *buf)
         int res;
         replay_get_array(buf, &size);
         replay_finish_event();
+        assert(size <= INT_MAX);
         res = (int)size;
-        assert(res >= 0);
         return res;
     } else if (replay_next_event_is(EVENT_CHAR_READ_ALL_ERROR)) {
         int res = replay_get_dword();