diff --git a/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java b/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java
index 82b84af2..36d04808 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java
@@ -48,7 +48,6 @@ import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.text.ParseException;
-import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
@@ -71,8 +70,6 @@ public class OpenScale {
     private String btDeviceName;
     private AlarmHandler alarmHandler;
 
-    private SimpleDateFormat dateTimeFormat = new SimpleDateFormat("dd.MM.yyyy HH:mm");
-
     private Context context;
 
     private ArrayList<FragmentUpdateListener> fragmentList;