diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index dfbe6ca607..347bebe304 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -168,12 +168,12 @@ typedef struct {
     uint64_t pos;
 } MatroskaSeekhead;
 
-typedef struct MatroskaLevel {
+typedef struct {
     uint64_t start;
     uint64_t length;
 } MatroskaLevel;
 
-typedef struct MatroskaDemuxContext {
+typedef struct {
     AVFormatContext *ctx;
 
     /* ebml stuff */