diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 14c6ecdf65..f0d141f10b 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -239,7 +239,7 @@ typedef struct MXFMCASubDescriptor {
 
 typedef struct MXFIndexTableSegment {
     MXFMetadataSet meta;
-    int edit_unit_byte_count;
+    unsigned edit_unit_byte_count;
     int index_sid;
     int body_sid;
     AVRational index_edit_rate;