diff --git a/src/main/java/CommandLineInterface.java b/src/main/java/CommandLineInterface.java
index 6d2dfb5..b6ee0fe 100644
--- a/src/main/java/CommandLineInterface.java
+++ b/src/main/java/CommandLineInterface.java
@@ -48,6 +48,7 @@ import java.util.stream.Stream;
  * minpercent : (optional) the minimum percent overlap to attempt a matching.
  * writefile : (optional) the filename to write results to
  * output : the values to print to System.out for piping
+ * pv : (optional) calculate p-values
  *
  */
 public class CommandLineInterface {