diff --git a/modules/telestion-application/src/main/java/org/telestion/application/RocketSound.java b/modules/telestion-application/src/main/java/org/telestion/application/RocketSound.java
index b3627804..d439e803 100644
--- a/modules/telestion-application/src/main/java/org/telestion/application/RocketSound.java
+++ b/modules/telestion-application/src/main/java/org/telestion/application/RocketSound.java
@@ -40,12 +40,12 @@ public static void main(String[] args) {
 				new MongoDatabaseService("raketenpraktikum", "raketenpraktikumPool"),
 				new DataService(dataTypeMap, Collections.emptyMap())
 		);*/
-				new DataService(Collections.emptyMap()),
+				/*new DataService(Collections.emptyMap()),
 				new DataListener(
 						List.of(
 								Address.outgoing(MockRocketPublisher.class, "pub")
 						)
 				)
-		);
+		);*/
 	}
 }
diff --git a/modules/telestion-core/src/main/java/org/telestion/core/database/DataListener.java b/modules/telestion-core/src/main/java/org/telestion/core/database/DataListener.java
index 9ece59bf..6b67ed19 100644
--- a/modules/telestion-core/src/main/java/org/telestion/core/database/DataListener.java
+++ b/modules/telestion-core/src/main/java/org/telestion/core/database/DataListener.java
@@ -8,7 +8,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.telestion.api.message.JsonMessage;
-import org.telestion.core.config.Config;
+import org.telestion.api.config.Config;
 import org.telestion.core.message.Address;
 
 public final class DataListener extends AbstractVerticle {
diff --git a/modules/telestion-core/src/main/java/org/telestion/core/util/Offset.java b/modules/telestion-core/src/main/java/org/telestion/core/util/Offset.java
deleted file mode 100644
index 0803cf9e..00000000
--- a/modules/telestion-core/src/main/java/org/telestion/core/util/Offset.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package org.telestion.core.util;
-
-import io.vertx.core.AbstractVerticle;
-import io.vertx.core.AsyncResult;
-import io.vertx.core.Handler;
-import io.vertx.core.Promise;
-import io.vertx.core.json.JsonObject;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.telestion.api.message.JsonMessage;
-import org.telestion.core.message.Address;
-import org.telestion.core.message.DataOperation;
-
-public final class Offset extends AbstractVerticle {
-	private final Logger logger = LoggerFactory.getLogger(Offset.class);
-
-	private final String inOffset = Address.incoming(Offset.class);
-
-	public Offset() {}
-
-	@Override
-	public void start(Promise<Void> startPromise) throws Exception {
-		this.registerConsumers();
-		startPromise.complete();
-	}
-
-	private void registerConsumers() {
-		vertx.eventBus().consumer(inOffset, request -> {
-			JsonMessage.on(DataOperation.class, request, dataOperation -> {
-				this.calculateOffset(dataOperation, res -> {
-					if (res.failed()) {
-						request.fail(-1, res.cause().getMessage());
-					} else {
-						request.reply(res.result());
-					}
-				});
-			});
-		});
-	}
-
-	private void calculateOffset(DataOperation dataOperation, Handler<AsyncResult<JsonObject>> handler) {
-		// TODO: parse data of dOp to numeric value
-		// TODO: parse offset of dOp to numeric value
-		// TODO: add offset to data and return
-	}
-}