diff --git a/src/input/input_mp4.cpp b/src/input/input_mp4.cpp
index 90764108..2e1c7923 100644
--- a/src/input/input_mp4.cpp
+++ b/src/input/input_mp4.cpp
@@ -209,7 +209,6 @@ namespace Mist{
       INFO_MSG("inFile failed!");
       return false;
     }
-    if (readExistingHeader()){return true;}
 
     // first we get the necessary header parts
     size_t tNumber = 0;