diff --git a/include/dicformat/context.h b/include/dicformat/context.h
index 083ea3a..c6d64db 100644
--- a/include/dicformat/context.h
+++ b/include/dicformat/context.h
@@ -74,7 +74,8 @@ typedef struct dataLinkedList
     struct dataLinkedList *previous;
     struct dataLinkedList *next;
     uint8_t               *data;
-    int                   type;
+    int32_t               type;
+    uint32_t              length;
 } dataLinkedList;
 
 typedef struct DumpHardwareEntriesWithData
diff --git a/include/dicformat/decls.h b/include/dicformat/decls.h
index ca9ee7d..33dcb73 100644
--- a/include/dicformat/decls.h
+++ b/include/dicformat/decls.h
@@ -44,7 +44,7 @@ void *open(const char *filepath);
 
 int close(void *context);
 
-uint8_t *read_media_tag(void *context, int tag);
+uint8_t *read_media_tag(void *context, int32_t tag, uint32_t *length);
 
 void *crc64_init(uint64_t polynomial, uint64_t seed);
 
diff --git a/src/open.c b/src/open.c
index 16acbe4..936ae1a 100644
--- a/src/open.c
+++ b/src/open.c
@@ -383,8 +383,9 @@ void *open(const char *filepath)
                         // TODO: MediaTagType
                         // MediaTagType mediaTagType = GetMediaTagTypeForDataType(blockHeader.type);
 
-                        mediaTag->type = blockHeader.type;
-                        mediaTag->data = data;
+                        mediaTag->type   = blockHeader.type;
+                        mediaTag->data   = data;
+                        mediaTag->length = blockHeader.length;
 
                         if(ctx->mediaTagsHead == NULL)
                         {
diff --git a/src/read.c b/src/read.c
index 302f3ed..256f95e 100644
--- a/src/read.c
+++ b/src/read.c
@@ -33,8 +33,10 @@
 #include <dicformat.h>
 #include <errno.h>
 
-uint8_t *read_media_tag(void *context, int tag)
+uint8_t *read_media_tag(void *context, int32_t tag, uint32_t *length)
 {
+    *length = 0;
+
     if(context == NULL)
     {
         errno = EINVAL;
@@ -56,7 +58,10 @@ uint8_t *read_media_tag(void *context, int tag)
     while(item != NULL)
     {
         if(item->type == tag)
+        {
+            *length = item->length;
             return item->data;
+        }
 
         item = item->next;
     }