diff --git a/ws2012/P2P/uebungen/11/src/node/Node.java b/ws2012/P2P/uebungen/11/src/node/Node.java
index 2a366058..ef0a66d1 100644
--- a/ws2012/P2P/uebungen/11/src/node/Node.java
+++ b/ws2012/P2P/uebungen/11/src/node/Node.java
@@ -438,9 +438,9 @@ public class Node {
 
 	private void sendFile(NodeIdentifier nodeID, File file) {
 
-		// calculate chunk size
-		int CHUNK_SIZE = BUFFER_SIZE - 15;
-
+		// calculate chunk size = BUFFER - ID_BITS - fileID - eofChar
+		int CHUNK_SIZE = BUFFER_SIZE - ID_BITS - 10 - 1;
+						
 		int FILE_SIZE = (int) file.length();
 
 		boolean eof = false;