diff --git a/build.gradle b/build.gradle
index 9201858..09ae6e5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,10 +27,9 @@ dependencies {
     implementation 'org.slf4j:slf4j-api:1.7.+'
     runtimeOnly 'ch.qos.logback:logback-classic:1.+'
 
-    testImplementation 'org.codehaus.groovy:groovy-all:3.0.5'
     testImplementation('org.spockframework:spock-core:2.0-M3-groovy-3.0')
+    testImplementation('com.squareup.okhttp3:mockwebserver:4.9.0')
     testImplementation("org.slf4j:slf4j-simple:1.7.+")
-    testImplementation('com.squareup.okhttp3:mockwebserver:4.8.0')
     //implementation platform('org.testcontainers:testcontainers-bom:1.14.3') //import bom
     //testCompile "org.testcontainers:influxdb:1.14.3"
 }
diff --git a/src/main/java/biz/nellemann/hmci/HmcClient.java b/src/main/java/biz/nellemann/hmci/HmcClient.java
index d5a3375..8ed607d 100644
--- a/src/main/java/biz/nellemann/hmci/HmcClient.java
+++ b/src/main/java/biz/nellemann/hmci/HmcClient.java
@@ -308,27 +308,9 @@ class HmcClient {
      * @return Response body string
      */
     private String getResponse(URL url) throws Exception {
-        return getResponse(url, 0);
-    }
-
-
-    /**
-     * Return a Response from the HMC
-     * @param url to get Response from
-     * @param retry number of retries for this call
-     * @return Response body string
-     */
-    private String getResponse(URL url, Integer retry) throws Exception {
 
         log.debug("getResponse() - " + url.toString());
 
-        if(responseErrors > 2) {
-            log.warn("getResponse() - retries > 2");
-            responseErrors = 0;
-            login();
-            return getResponse(url, retry++);
-        }
-
         Request request = new Request.Builder()
                 .url(url)
                 .addHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8")
@@ -346,12 +328,7 @@ class HmcClient {
                 log.warn("getResponse() - 401 - login and retry.");
                 authToken = null;
                 login();
-                return getResponse(url, retry++);
-            }
-
-            if(retry < 2) {
-                log.warn("getResponse() - Retrying due to unexpected response: " + response.code());
-                return getResponse(url, retry++);
+                return null;
             }
 
             log.error("getResponse() - Unexpected response: " + response.code());
diff --git a/src/main/java/biz/nellemann/hmci/Main.java b/src/main/java/biz/nellemann/hmci/Main.java
index 5267d98..9745f08 100644
--- a/src/main/java/biz/nellemann/hmci/Main.java
+++ b/src/main/java/biz/nellemann/hmci/Main.java
@@ -33,8 +33,8 @@ public class Main implements Callable<Integer> {
 
     private final static Logger log = LoggerFactory.getLogger(Main.class);
 
-    @Option(names = { "-c", "--conf" }, description = "Configuration file [default: '/etc/hmci.toml'].")
-    private String configurationFile = "/etc/hmci.toml";
+    @Option(names = { "-c", "--conf" }, description = "Configuration file [default: '/etc/hmci.toml'].", defaultValue = "/etc/hmci.toml", paramLabel = "<file>")
+    private String configurationFile;
 
     public static void main(String... args) {
         int exitCode = new CommandLine(new Main()).execute(args);
diff --git a/src/test/groovy/biz/nellemann/hmci/InfluxClientTest.groovy b/src/test/groovy/biz/nellemann/hmci/InfluxClientTest.groovy
index c55bcc0..fd7f6c7 100644
--- a/src/test/groovy/biz/nellemann/hmci/InfluxClientTest.groovy
+++ b/src/test/groovy/biz/nellemann/hmci/InfluxClientTest.groovy
@@ -49,7 +49,7 @@ class InfluxClientTest extends Specification {
         influxClient.writeLogicalPartition(lpar)
 
         then:
-        lpar.metrics.systemUtil.utilSamples.first().sampleInfo.status == 2
+        lpar.metrics.systemUtil.sample.sampleInfo.status == 2
 
     }