diff --git a/tomcat7-war-runner/src/main/java/org/apache/tomcat/maven/runner/Tomcat7RunnerCli.java b/tomcat7-war-runner/src/main/java/org/apache/tomcat/maven/runner/Tomcat7RunnerCli.java
index 560572c3..bcd768c7 100644
--- a/tomcat7-war-runner/src/main/java/org/apache/tomcat/maven/runner/Tomcat7RunnerCli.java
+++ b/tomcat7-war-runner/src/main/java/org/apache/tomcat/maven/runner/Tomcat7RunnerCli.java
@@ -221,7 +221,7 @@ public static void main( String[] args )
         }
         if ( line.hasOption( clientAuth.getOpt() ) )
         {
-            tomcat7Runner.clientAuth = clientAuth.getOpt();
+            tomcat7Runner.clientAuth = "true";
         }
         if ( line.hasOption( keyAlias.getOpt() ) )
         {