diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 8ecc6288db..10fd958f5f 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -58,7 +58,7 @@ typedef struct Track {
     MatroskaTrackFlags flags;
 
     int encoding_scope;
-    int encoding_algo;
+    MatroskaTrackEncodingCompAlgo encoding_algo;
     uint8_t *encoding_settings;
     int encoding_settings_len;
 } MatroskaTrack;