diff --git a/src/de/tudbut/tryumph/config/RequestCatcherConfig.java b/src/de/tudbut/tryumph/config/RequestCatcherConfig.java
index af5daed..b464157 100644
--- a/src/de/tudbut/tryumph/config/RequestCatcherConfig.java
+++ b/src/de/tudbut/tryumph/config/RequestCatcherConfig.java
@@ -1,9 +1,5 @@
 package de.tudbut.tryumph.config;
 
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.BufferedReader;
-
 import tudbut.parsing.TCN;
 import tudbut.parsing.JSON;
 import de.tudbut.async.*;
@@ -32,9 +28,12 @@ public class RequestCatcherConfig {
             });
     }
     
-    private Task<Void> build() {
+    private Task<RequestCatcherConfig> build() {
         return t((res, rej) -> {
-            res.call(null);
+            if(this.name == null || this.configHolder == null) {
+                rej.call(new IllegalStateException("RequestCatcherConfig is not correctly initialized but was used"));
+            }
+            res.call(this);
         });
     }