diff --git a/Sources/Earthquake Network/Models/EQNUser.m b/Sources/Earthquake Network/Models/EQNUser.m
index 50a44c6..0fa4dfe 100644
--- a/Sources/Earthquake Network/Models/EQNUser.m	
+++ b/Sources/Earthquake Network/Models/EQNUser.m	
@@ -35,18 +35,18 @@
 {
     self = [super init];
     if (self) {
-        self.tokenUser = [[NSUserDefaults standardUserDefaults] objectForKey:TOKEN_USER];
+        _tokenUser = [[NSUserDefaults standardUserDefaults] objectForKey:TOKEN_USER];
         id savedUserId = [[NSUserDefaults standardUserDefaults] objectForKey:USER_ID];
-        self.user_ID = [self convertUserIdIntoString:savedUserId];
+        _user_ID = [self convertUserIdIntoString:savedUserId];
         
         NSArray *lastPosArray = [EQNUtility loadArrayOfClass:[CLLocation class] fromUserDefaultsForKey:EQNUserDefaultLastLocation];
         if (lastPosArray.count > 0) {
-            self.lastPosition = [lastPosArray lastObject];
+            _lastPosition = [lastPosArray lastObject];
         }
         
-        self.registrato = NO;
-        if (self.user_ID) {
-            self.registrato = YES;
+        _registrato = NO;
+        if (_user_ID) {
+            _registrato = YES;
         }
         
         [[EQNAccelerometroManager sharedInstance] addObserver:(id)self