diff --git a/prometheus/src/main/java/com/itv/bucky/prometheus/PrometheusMetricsCollector.java b/prometheus/src/main/java/com/itv/bucky/prometheus/PrometheusMetricsCollector.java
index 8e32674..a4da661 100644
--- a/prometheus/src/main/java/com/itv/bucky/prometheus/PrometheusMetricsCollector.java
+++ b/prometheus/src/main/java/com/itv/bucky/prometheus/PrometheusMetricsCollector.java
@@ -13,150 +13,150 @@
 
 public class PrometheusMetricsCollector extends AbstractMetricsCollector {
 
-	private final Gauge connections;
+  private final Gauge connections;
 
-	private final Gauge channels;
+  private final Gauge channels;
 
-	private final Counter publishedMessages;
+  private final Counter publishedMessages;
 
-	private final Counter failedToPublishMessages;
+  private final Counter failedToPublishMessages;
 
-	private final Counter ackedPublishedMessages;
+  private final Counter ackedPublishedMessages;
 
-	private final Counter nackedPublishedMessages;
+  private final Counter nackedPublishedMessages;
 
-	private final Counter unroutedPublishedMessages;
+  private final Counter unroutedPublishedMessages;
 
-	private final Counter consumedMessages;
+  private final Counter consumedMessages;
 
-	private final Counter acknowledgedMessages;
+  private final Counter acknowledgedMessages;
 
-	private final Counter rejectedMessages;
+  private final Counter rejectedMessages;
 
-	public PrometheusMetricsCollector(final CollectorRegistry registry) {
-		this(registry, "rabbitmq");
-	}
+  public PrometheusMetricsCollector(final CollectorRegistry registry) {
+    this(registry, "rabbitmq");
+  }
 
-	public PrometheusMetricsCollector(final CollectorRegistry registry, final String prefix) {
-		this.connections = Gauge.build()
+  public PrometheusMetricsCollector(final CollectorRegistry registry, final String prefix) {
+    this.connections = Gauge.build()
       .name(prefix + "_connections")
       .help("Current connections")
       .create();
-		registry.register(this.connections);
+    registry.register(this.connections);
 
-		this.channels = Gauge.build()
+    this.channels = Gauge.build()
       .name(prefix + "_channels")
       .help("Current channels")
       .create();
-		registry.register(this.channels);
+    registry.register(this.channels);
 
-		this.publishedMessages = Counter.build()
+    this.publishedMessages = Counter.build()
       .name(prefix + "_published_messages")
       .help("Count of published messages")
       .create();
-		registry.register(this.publishedMessages);
+    registry.register(this.publishedMessages);
 
-		this.failedToPublishMessages = Counter.build()
+    this.failedToPublishMessages = Counter.build()
       .name(prefix + "_failed_to_publish_messages")
       .help("Count of failed to publish messages")
       .create();
-		registry.register(failedToPublishMessages);
+    registry.register(failedToPublishMessages);
 
-		this.ackedPublishedMessages = Counter.build()
+    this.ackedPublishedMessages = Counter.build()
       .name(prefix + "_acked_published_messages")
       .help("Count of acknowledged publish messages")
       .create();
-		registry.register(ackedPublishedMessages);
+    registry.register(ackedPublishedMessages);
 
-		this.nackedPublishedMessages = Counter.build()
+    this.nackedPublishedMessages = Counter.build()
       .name(prefix + "_nacked_published_messages")
       .help("Count of not acknowledged publish messages")
       .create();
-		registry.register(nackedPublishedMessages);
+    registry.register(nackedPublishedMessages);
 
-		this.unroutedPublishedMessages = Counter.build()
+    this.unroutedPublishedMessages = Counter.build()
       .name(prefix + "_unrouted_published_messages")
       .help("Count of unrouted publish messages")
       .create();
-		registry.register(unroutedPublishedMessages);
+    registry.register(unroutedPublishedMessages);
 
-		this.consumedMessages = Counter.build()
+    this.consumedMessages = Counter.build()
       .name(prefix + "_consumed_messages")
       .help("Count of consumed messages")
       .create();
-		registry.register(consumedMessages);
+    registry.register(consumedMessages);
 
-		this.acknowledgedMessages = Counter.build()
+    this.acknowledgedMessages = Counter.build()
       .name(prefix + "_acknowledged_messages")
       .help("Count of acknowledged consumed messages")
       .create();
-		registry.register(acknowledgedMessages);
+    registry.register(acknowledgedMessages);
 
-		this.rejectedMessages = Counter.build()
+    this.rejectedMessages = Counter.build()
       .name(prefix + "_rejected_messages")
       .help("Count of rejected consumed messages")
       .create();
-		registry.register(rejectedMessages);
-
-	}
-
-	@Override
-	protected void incrementConnectionCount(Connection connection) {
-		connections.inc();
-	}
-
-	@Override
-	protected void decrementConnectionCount(Connection connection) {
-		connections.dec();
-	}
-
-	@Override
-	protected void incrementChannelCount(Channel channel) {
-		channels.inc();
-	}
-
-	@Override
-	protected void decrementChannelCount(Channel channel) {
-		channels.dec();
-	}
-
-	@Override
-	protected void markPublishedMessage() {
-		publishedMessages.inc();
-	}
-
-	@Override
-	protected void markMessagePublishFailed() {
-		failedToPublishMessages.inc();
-	}
-
-	@Override
-	protected void markConsumedMessage() {
-		consumedMessages.inc();
-	}
-
-	@Override
-	protected void markAcknowledgedMessage() {
-		acknowledgedMessages.inc();
-	}
-
-	@Override
-	protected void markRejectedMessage() {
-		rejectedMessages.inc();
-	}
-
-	@Override
-	protected void markMessagePublishAcknowledged() {
-		ackedPublishedMessages.inc();
-	}
-
-	@Override
-	protected void markMessagePublishNotAcknowledged() {
-		nackedPublishedMessages.inc();
-	}
-
-	@Override
-	protected void markPublishedMessageUnrouted() {
-		unroutedPublishedMessages.inc();
-	}
+    registry.register(rejectedMessages);
+
+  }
+
+  @Override
+  protected void incrementConnectionCount(Connection connection) {
+    connections.inc();
+  }
+
+  @Override
+  protected void decrementConnectionCount(Connection connection) {
+    connections.dec();
+  }
+
+  @Override
+  protected void incrementChannelCount(Channel channel) {
+    channels.inc();
+  }
+
+  @Override
+  protected void decrementChannelCount(Channel channel) {
+    channels.dec();
+  }
+
+  @Override
+  protected void markPublishedMessage() {
+    publishedMessages.inc();
+  }
+
+  @Override
+  protected void markMessagePublishFailed() {
+    failedToPublishMessages.inc();
+  }
+
+  @Override
+  protected void markConsumedMessage() {
+    consumedMessages.inc();
+  }
+
+  @Override
+  protected void markAcknowledgedMessage() {
+    acknowledgedMessages.inc();
+  }
+
+  @Override
+  protected void markRejectedMessage() {
+    rejectedMessages.inc();
+  }
+
+  @Override
+  protected void markMessagePublishAcknowledged() {
+    ackedPublishedMessages.inc();
+  }
+
+  @Override
+  protected void markMessagePublishNotAcknowledged() {
+    nackedPublishedMessages.inc();
+  }
+
+  @Override
+  protected void markPublishedMessageUnrouted() {
+    unroutedPublishedMessages.inc();
+  }
 }