diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 0b514dbb24..4089d0f526 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -468,15 +468,18 @@ static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size
     /* some files don'thave FooterPartition set in every partition */
     if (footer_partition) {
         if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
-            av_log(mxf->fc, AV_LOG_ERROR, "inconsistent FooterPartition value: %li != %li\n",
+            av_log(mxf->fc, AV_LOG_ERROR,
+                   "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
                    mxf->footer_partition, footer_partition);
         } else {
             mxf->footer_partition = footer_partition;
         }
     }
 
-    av_dlog(mxf->fc, "PartitionPack: ThisPartition = 0x%lx, PreviousPartition = 0x%lx, "
-            "FooterPartition = 0x%lx, IndexSID = %i, BodySID = %i\n",
+    av_dlog(mxf->fc,
+            "PartitionPack: ThisPartition = 0x%"PRIX64
+            ", PreviousPartition = 0x%"PRIX64", "
+            "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
             partition->this_partition,
             partition->previous_partition, footer_partition,
             partition->index_sid, partition->body_sid);
@@ -957,7 +960,8 @@ static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t of
         offset -= p->essence_length;
     }
 
-    av_log(mxf->fc, AV_LOG_ERROR, "failed to find absolute offset of %lx in BodySID %i - partial file?\n",
+    av_log(mxf->fc, AV_LOG_ERROR,
+           "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
            offset_in, body_sid);
 
     return AVERROR_INVALIDDATA;
@@ -1597,7 +1601,8 @@ static void mxf_compute_essence_containers(MXFContext *mxf)
         if (p->essence_length < 0) {
             /* next ThisPartition < essence_offset */
             p->essence_length = 0;
-            av_log(mxf->fc, AV_LOG_ERROR, "partition %i: bad ThisPartition = %lx\n",
+            av_log(mxf->fc, AV_LOG_ERROR,
+                   "partition %i: bad ThisPartition = %"PRIX64"\n",
                    x+1, mxf->partitions[x+1].this_partition);
         }
     }