diff --git a/src/analysers/info.cpp b/src/analysers/info.cpp
index d2854002..4b01a9c9 100644
--- a/src/analysers/info.cpp
+++ b/src/analysers/info.cpp
@@ -90,9 +90,6 @@ namespace Info {
       fileSpecs.removeMember( "streams" );
     } else {
       fileSpecs["format"] = "dtsc";
-      if (DTSC::isFixed(fileSpecs)){
-        fileSpecs["is_fixed"] = 1ll;
-      }
       JSON::Value tracks = fileSpecs["tracks"];
       for(JSON::ObjIter trackIt = tracks.ObjBegin(); trackIt != tracks.ObjEnd(); trackIt++){
         fileSpecs["tracks"][trackIt->first].removeMember("fragments");