diff --git a/app/src/main/java/net/foucry/pilldroid/AlarmReceiver.java b/app/src/main/java/net/foucry/pilldroid/AlarmReceiver.java
index e94aaea..8883956 100644
--- a/app/src/main/java/net/foucry/pilldroid/AlarmReceiver.java
+++ b/app/src/main/java/net/foucry/pilldroid/AlarmReceiver.java
@@ -65,7 +65,7 @@ public class AlarmReceiver extends BroadcastReceiver {
                     notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
                             | Intent.FLAG_ACTIVITY_SINGLE_TOP);
 
-                    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
+                    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_IMMUTABLE);
 
                     NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "PillDroid")
                             .setSmallIcon(R.drawable.ic_pill_alarm)
@@ -139,7 +139,7 @@ public class AlarmReceiver extends BroadcastReceiver {
         PendingIntent alarmIntent;
 
         Intent intent = new Intent(context, AlarmReceiver.class);
-        alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
+        alarmIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_IMMUTABLE);
 
         AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
 
diff --git a/app/src/main/java/net/foucry/pilldroid/DBHelper.java b/app/src/main/java/net/foucry/pilldroid/DBHelper.java
index bfaf962..5d9954e 100644
--- a/app/src/main/java/net/foucry/pilldroid/DBHelper.java
+++ b/app/src/main/java/net/foucry/pilldroid/DBHelper.java
@@ -315,6 +315,7 @@ class DBHelper extends SQLiteOpenHelper {
     public void updateDrug(Drug drug) {
 
         Log.d(TAG, "Update Drug == " + drug.toString());
+        Log.d(TAG, "drug last_update == " + UtilDate.convertDate(drug.getDateLastUpdate()));
 
         // Get reference to writable DB
         SQLiteDatabase db = this.getWritableDatabase();
diff --git a/app/src/main/java/net/foucry/pilldroid/Drug.java b/app/src/main/java/net/foucry/pilldroid/Drug.java
index 7eba859..54a1686 100644
--- a/app/src/main/java/net/foucry/pilldroid/Drug.java
+++ b/app/src/main/java/net/foucry/pilldroid/Drug.java
@@ -5,6 +5,7 @@ import android.util.Log;
 import java.io.Serializable;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.Objects;
 
 import static net.foucry.pilldroid.UtilDate.dateAtNoon;
 import static net.foucry.pilldroid.UtilDate.nbOfDaysBetweenDateAndToday;
@@ -148,17 +149,17 @@ public class Drug implements Serializable {
     }
 
     void setDateEndOfStock() {
-        int numberDayOfPrise;
+        int numberDayOfTake;
         if (this.take > 0) {
-            numberDayOfPrise = (int) Math.floor(this.stock / this.take);
+            numberDayOfTake = (int) Math.floor(this.stock / this.take);
         } else {
-            numberDayOfPrise = 0;
+            numberDayOfTake = 0;
         }
 
         Date aDate = dateAtNoon(new Date());
         Calendar calendar = Calendar.getInstance();
         calendar.setTime(aDate);
-        calendar.add(Calendar.DAY_OF_YEAR, numberDayOfPrise);
+        calendar.add(Calendar.DAY_OF_YEAR, numberDayOfTake);
 
         this.dateEndOfStock = calendar.getTime();
     }
@@ -175,4 +176,15 @@ public class Drug implements Serializable {
             setDateLastUpdate(new Date().getTime());
         }
     }
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Drug drug = (Drug) o;
+        return stock == drug.stock &&
+                take == drug.take &&
+                alertThreshold == drug.alertThreshold &&
+                warnThreshold == drug.warnThreshold &&
+                Objects.equals(name, drug.name);
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/net/foucry/pilldroid/DrugDetailActivity.java b/app/src/main/java/net/foucry/pilldroid/DrugDetailActivity.java
index d52e90d..f39b211 100644
--- a/app/src/main/java/net/foucry/pilldroid/DrugDetailActivity.java
+++ b/app/src/main/java/net/foucry/pilldroid/DrugDetailActivity.java
@@ -28,6 +28,8 @@ public class DrugDetailActivity extends AppCompatActivity {
     private static final String TAG = DrugDetailActivity.class.getName();
 
     Drug drug;
+
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -109,8 +111,7 @@ public class DrugDetailActivity extends AppCompatActivity {
         return super.onOptionsItemSelected(item);
     }
 
-    private void getMDrugChanges()
-    {
+    private void getMDrugChanges() {
         Log.d(TAG, "Time to save new values");
 
         DBHelper dbHelper = new DBHelper(this);
@@ -142,9 +143,14 @@ public class DrugDetailActivity extends AppCompatActivity {
         newDrug.setTake(Double.parseDouble(takeValue));
         newDrug.setWarnThreshold(Integer.parseInt(warningValue));
         newDrug.setAlertThreshold(Integer.parseInt(alertValue));
-        newDrug.setDateLastUpdate(new Date().getTime());
         newDrug.setDateEndOfStock();
 
-        dbHelper.updateDrug(newDrug);
+        if (drug.equals(newDrug)) {
+            Log.d(TAG, "drug and newDrug are Equals");
+        } else {
+            Log.d(TAG, "drug and newDrug are NOT Equals");
+            newDrug.setDateLastUpdate(new Date().getTime());
+            dbHelper.updateDrug(newDrug);
+        }
     }
 }
diff --git a/app/src/main/java/net/foucry/pilldroid/UtilDate.java b/app/src/main/java/net/foucry/pilldroid/UtilDate.java
index 6a596a2..1213256 100644
--- a/app/src/main/java/net/foucry/pilldroid/UtilDate.java
+++ b/app/src/main/java/net/foucry/pilldroid/UtilDate.java
@@ -5,6 +5,7 @@ import android.util.Log;
 import java.text.DateFormat;
 import java.text.ParsePosition;
 import java.text.SimpleDateFormat;
+import java.time.LocalTime;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.Locale;
@@ -95,7 +96,7 @@ class UtilDate {
      * @return formatted Date String
      */
     static String convertDate(long dateInMilliseconds) {
-        DateFormat formatter = new SimpleDateFormat("dd/MM/yy HH:mm:ss", Locale.FRANCE);
+        DateFormat formatter = new SimpleDateFormat("dd/MM/yy HH:mm:ss", Locale.getDefault());
         Calendar calendar = Calendar.getInstance();
         calendar.setTimeInMillis(dateInMilliseconds);
         return formatter.format(calendar.getTime());
diff --git a/build.gradle b/build.gradle
index 0948da1..cfe6773 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,7 +9,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.3'
+        classpath 'com.android.tools.build:gradle:7.0.4'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files