diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
index 8c0a9b0102..738bfeaefb 100644
--- a/libavformat/dashdec.c
+++ b/libavformat/dashdec.c
@@ -1203,6 +1203,7 @@ static int parse_programinformation(AVFormatContext *s, xmlNodePtr node)
         }
         node = xmlNextElementSibling(node);
         xmlFree(val);
+        val = NULL;
     }
     return 0;
 }