diff --git a/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFileDownload.java b/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFileDownload.java
index 503238d..c3f289d 100755
--- a/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFileDownload.java
+++ b/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFileDownload.java
@@ -22,6 +22,7 @@ public class UeBehaviourFileDownload extends UeBehaviour {
     @Configurable("File address")
     private String url = "http://speedtest.ftp.otenet.gr/files/test1Mb.db";
 
+    private transient long estimatedDataLength = -1;
 
     @Override
     protected void execute() throws IOException {
@@ -34,15 +35,16 @@ public class UeBehaviourFileDownload extends UeBehaviour {
         connection.connect();
         InputStream in = connection.getInputStream();
 
-        long total = in.available();
         long progress = 0;
         long read = 0;
 
         while((read = in.read(data)) != -1 && !stopExecution()){
             progress += read;
-            super.setProgress((float)progress/total);
+            super.setProgress((float)progress/estimatedDataLength);
             super.setHandledIncomingData(read);
         }
+
+        estimatedDataLength = progress;
         in.close();
     }