diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/ImportExportPrefs.java b/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/ImportExportPrefs.java
index 06fde217f5..d7172cec97 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/ImportExportPrefs.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/ImportExportPrefs.java
@@ -28,6 +28,7 @@ import java.util.Map;
 import info.nightscout.androidaps.MainApp;
 import info.nightscout.androidaps.R;
 import info.nightscout.androidaps.events.EventAppExit;
+import info.nightscout.androidaps.logging.L;
 import info.nightscout.androidaps.plugins.ConfigBuilder.ConfigBuilderPlugin;
 import info.nightscout.utils.OKDialog;
 import info.nightscout.utils.ToastUtils;
@@ -37,7 +38,7 @@ import info.nightscout.utils.ToastUtils;
  */
 
 public class ImportExportPrefs {
-    private static Logger log = LoggerFactory.getLogger(ImportExportPrefs.class);
+    private static Logger log = LoggerFactory.getLogger(L.CORE);
     static File path = new File(Environment.getExternalStorageDirectory().toString());
     static public final File file = new File(path, MainApp.gs(R.string.app_name) + "Preferences");
 
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/LoggerUtils.java b/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/LoggerUtils.java
index 3be97056c5..fc1cc0362a 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/LoggerUtils.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/LoggerUtils.java
@@ -4,13 +4,14 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import ch.qos.logback.classic.LoggerContext;
+import info.nightscout.androidaps.logging.L;
 
 /**
  * This class provides serveral methods for log-handling (eg. sending logs as emails).
  */
 public class LoggerUtils {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(LoggerUtils.class);
+    private static final Logger LOGGER = LoggerFactory.getLogger(L.CORE);
 
     public static String SUFFIX = ".log.zip";
 
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/MaintenancePlugin.java b/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/MaintenancePlugin.java
index 3fd3745f42..02b8349332 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/MaintenancePlugin.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/MaintenancePlugin.java
@@ -27,12 +27,13 @@ import info.nightscout.androidaps.R;
 import info.nightscout.androidaps.interfaces.PluginBase;
 import info.nightscout.androidaps.interfaces.PluginDescription;
 import info.nightscout.androidaps.interfaces.PluginType;
+import info.nightscout.androidaps.logging.L;
 import info.nightscout.androidaps.plugins.NSClientInternal.data.NSSettingsStatus;
 import info.nightscout.utils.SP;
 
 public class MaintenancePlugin extends PluginBase {
 
-    private static final Logger LOG = LoggerFactory.getLogger(MaintenancePlugin.class);
+    private static final Logger LOG = LoggerFactory.getLogger(L.CORE);
 
     private final Context ctx;