diff --git a/libavformat/rtpdec.h b/libavformat/rtpdec.h
index 9321066ba7..7e356c048d 100644
--- a/libavformat/rtpdec.h
+++ b/libavformat/rtpdec.h
@@ -173,9 +173,9 @@ struct RTPDemuxContext {
     /*@}*/
 
     /* rtcp sender statistics receive */
-    int64_t last_rtcp_ntp_time;
+    uint64_t last_rtcp_ntp_time;
     int64_t last_rtcp_reception_time;
-    int64_t first_rtcp_ntp_time;
+    uint64_t first_rtcp_ntp_time;
     uint32_t last_rtcp_timestamp;
     int64_t rtcp_ts_offset;