diff --git a/build.gradle b/build.gradle
index 6db8f69..eef237b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ apply plugin: 'application'
 
 group = "com.github.lookout"
 description = "A utility for monitoring the delay of Kafka consumers"
-version = '0.1.6'
+version = '0.1.7'
 mainClassName = 'com.github.lookout.verspaetung.Main'
 defaultTasks 'clean', 'check'
 sourceCompatibility = '1.7'
diff --git a/src/main/groovy/com/github/lookout/verspaetung/metrics/ConsumerGauge.groovy b/src/main/groovy/com/github/lookout/verspaetung/metrics/ConsumerGauge.groovy
index fad3c24..d6a590f 100644
--- a/src/main/groovy/com/github/lookout/verspaetung/metrics/ConsumerGauge.groovy
+++ b/src/main/groovy/com/github/lookout/verspaetung/metrics/ConsumerGauge.groovy
@@ -8,6 +8,9 @@ import org.coursera.metrics.datadog.Tagged
 import com.github.lookout.verspaetung.KafkaConsumer
 import com.github.lookout.verspaetung.TopicPartition
 
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+
 /**
  * Dropwizard Metrics Gauge for reporting the value of a given KafkaConsumer
  */
@@ -18,6 +21,8 @@ class ConsumerGauge implements Gauge<Integer>, Tagged {
     protected AbstractMap<TopicPartition, Long> topics
     private TopicPartition topicPartition
 
+    private Logger logger = LoggerFactory.getLogger(ConsumerGauge.class)
+
     ConsumerGauge(KafkaConsumer consumer,
                   AbstractMap<KafkaConsumer, Integer> consumers,
                   AbstractMap<TopicPartition, Long> topics) {
@@ -42,7 +47,7 @@ class ConsumerGauge implements Gauge<Integer>, Tagged {
         return ["partition:${this.consumer.partition}",
                 "topic:${this.consumer.topic}",
                 "consumer-group:${this.consumer.name}"
-                ].collect { s -> s.strings.join('') }
+                ].collect { s -> s.toString() }
     }
 
     /**