diff --git a/libavformat/thp.c b/libavformat/thp.c
index 727fb5095c..16fa327002 100644
--- a/libavformat/thp.c
+++ b/libavformat/thp.c
@@ -143,6 +143,9 @@ static int thp_read_header(AVFormatContext *s)
         }
     }
 
+    if (!thp->vst)
+        return AVERROR_INVALIDDATA;
+
     return 0;
 }