diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index 995e4112735a2f916ca8badbb69c4c58468fd501..c6cdd3b3c034ac26f8a5c4e935588bf1d2d1d469 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -32,6 +32,7 @@
 
 //#define DEBUG
 
+#include <inttypes.h>
 #include <math.h>
 #include <time.h>
 
@@ -1856,7 +1857,7 @@ static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket
         }
 
         *out = pktl->pkt;
-        av_dlog(s, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
+        av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
         s->packet_buffer = pktl->next;
         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;