diff --git a/src/main/java/CommandLineInterface.java b/src/main/java/CommandLineInterface.java
index 5040a8c..add4116 100644
--- a/src/main/java/CommandLineInterface.java
+++ b/src/main/java/CommandLineInterface.java
@@ -96,7 +96,7 @@ public class CommandLineInterface {
                 Integer[] populations;
                 String outputFilename = line.getOptionValue("o");
                 Integer numWells = Integer.parseInt(line.getOptionValue("w"));
-                Double dropoutRate = Double.parseDouble(line.getOptionValue("err"));
+                Double dropoutRate = Double.parseDouble(line.getOptionValue("d"));
                 if (line.hasOption("random")) {
                     //Array holding values of minimum and maximum populations
                    Integer[] min_max = Stream.of(line.getOptionValues("random"))
@@ -367,7 +367,8 @@ public class CommandLineInterface {
                 .hasArgs()
                 .argName("number [number]...")
                 .build();
-        Option dropoutRate = Option.builder("err") //add this to plate options
+        Option dropoutRate = Option.builder("d") //add this to plate options
+                .longOpt("dropout-rate")
                 .hasArg()
                 .desc("The sequence dropout rate due to amplification error. (0.0 - 1.0)")
                 .argName("rate")