diff --git a/Readme.md b/Readme.md
index 274d203..1e3fd53 100644
--- a/Readme.md
+++ b/Readme.md
@@ -92,17 +92,17 @@ curl -H "Content-Type: application/json" -X POST -d '{"regex": "AMPLT|PHASE"}' h
    {
       "backend":"sf-databuffer",
       "channels":[
-         "Channel_01",
-         "Channel_02",
-         "Channel_03"
+         "Channel_01_AMPLT",
+         "Channel_02_AMPLT",
+         "Channel_03_PHASE"
       ]
    },
    {
       "backend":"sf-archiverappliance",
       "channels":[
-         "Channel_01",
-         "Channel_04",
-         "Channel_05"
+         "Channel_01_AMPLT",
+         "Channel_04_PHASE",
+         "Channel_05_AMPLT"
       ]
    }
 ]
diff --git a/src/main/java/ch/psi/daq/queryrest/query/QueryManagerImpl.java b/src/main/java/ch/psi/daq/queryrest/query/QueryManagerImpl.java
index 1059e26..ea47a34 100644
--- a/src/main/java/ch/psi/daq/queryrest/query/QueryManagerImpl.java
+++ b/src/main/java/ch/psi/daq/queryrest/query/QueryManagerImpl.java
@@ -69,7 +69,7 @@ public class QueryManagerImpl implements QueryManager {
 
    public Collection<ChannelInfos> getChannelInfos(ChannelNameRequest request) {
       // set backends if not defined yet
-      channelNameCache.setBackends(request.getChannels());
+      channelNameCache.configureBackends(request.getChannels());
 
       Stream<ChannelInfos> stream = request.getRequestsByBackend().entrySet().stream()
             .filter(entry ->
@@ -94,7 +94,7 @@ public class QueryManagerImpl implements QueryManager {
    @Override
    public List<Entry<DAQQueryElement, Stream<Triple<BackendQuery, ChannelName, ?>>>> getEvents(DAQQueries queries) {
       // set backends if not defined yet
-      channelNameCache.setBackends(queries);
+      channelNameCache.configureBackends(queries);
 
       List<Entry<DAQQueryElement, Stream<Triple<BackendQuery, ChannelName, ?>>>> results =
             new ArrayList<>(queries.getQueries().size());