diff --git a/README.md b/README.md
index 64f1ff7..94ebb0e 100644
--- a/README.md
+++ b/README.md
@@ -58,4 +58,7 @@ There are a few more options :
   - debug : turn on debug logging level
   - trace : turn on trace logging level
   - signaturelength : size of the block used to compute the checksum
+  - logfile : send logs to this file instead of stdout
+  - logfilesize : maximum size of each log file (default 10M)
+  - logfilenumber : number of rotated log files (default 5)
 
diff --git a/src/main/java/info/fetter/logstashforwarder/Forwarder.java b/src/main/java/info/fetter/logstashforwarder/Forwarder.java
index 71f67af..cefbdf5 100644
--- a/src/main/java/info/fetter/logstashforwarder/Forwarder.java
+++ b/src/main/java/info/fetter/logstashforwarder/Forwarder.java
@@ -63,7 +63,7 @@ public class Forwarder {
 	private static int signatureLength = 4096;
 	private static boolean tailSelected = false;
 	private static String logfile = null;
-	private static String logfileSize = "10M";
+	private static String logfileSize = "10MB";
 	private static int logfileNumber = 5;
 
 	public static void main(String[] args) {