diff --git a/src/bitmessageqt/__init__.py b/src/bitmessageqt/__init__.py
index 27338fd1..3280f2d8 100644
--- a/src/bitmessageqt/__init__.py
+++ b/src/bitmessageqt/__init__.py
@@ -2027,34 +2027,34 @@ class MyForm(QtGui.QMainWindow):
             if float(self.settingsDialogInstance.ui.lineEditMaxAcceptableSmallMessageDifficulty.text()) >= 1 or float(self.settingsDialogInstance.ui.lineEditMaxAcceptableSmallMessageDifficulty.text()) == 0:
                 shared.config.set('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes', str(int(float(
                     self.settingsDialogInstance.ui.lineEditMaxAcceptableSmallMessageDifficulty.text()) * shared.networkDefaultPayloadLengthExtraBytes)))
-            #my implementation starts here,it was a line here.AQWA
+           #my implementation starts here,it was a line here.AQWA
             if ((self.settingsDialogInstance.ui.lineEditHours.text()=='')  and  (self.settingsDialogInstance.ui.lineEditDays.text()=='') and (self.settingsDialogInstance.ui.lineEditMonths.text()=='')):
                 if (((shared.config.get('bitmessagesettings', 'hours')) != str(self.settingsDialogInstance.ui.lineEditHours.text())) or #if we update the time period from one time period(f.e 1/0/0) to default -/-/,inform the user that restart is needed in order his changes to take effect.AQWA
-                     ((shared.config.get('bitmessagesettings', 'days')) != str(self.settingsDialogInstance.ui.lineEditDays.text())) or
-                       ((shared.config.get('bitmessagesettings', 'months')) != str(self.settingsDialogInstance.ui.lineEditMonths.text()))) :
-                   QMessageBox.about(self, _translate("MainWindow", "Restart"), _translate(
-                        "MainWindow", "You must restart Bitmessage for the time period change to take effect."))
-                   
+                      ((shared.config.get('bitmessagesettings', 'days')) != str(self.settingsDialogInstance.ui.lineEditDays.text())) or
+                        ((shared.config.get('bitmessagesettings', 'months')) != str(self.settingsDialogInstance.ui.lineEditMonths.text()))):
+                          QMessageBox.about(self, _translate("MainWindow", "Restart"), _translate(
+                          "MainWindow", "You must restart Bitmessage for the time period change to take effect."))
                 shared.config.set('bitmessagesettings', 'hours', '')#give default values to fields..this default situation is special and thats why its needs special treatment ;).AQWA
                 shared.config.set('bitmessagesettings', 'days', '')#these commands update each field in the keys.dat file.AQWA
                 shared.config.set('bitmessagesettings', 'months', '')
                 shared.config.set('bitmessagesettings', 'timeperiod', '-1')
             else:#So,if all time period fields(hours,months,days) have valid values(valid values---> 0/0/0, 0/3/2, -/-/-, no valid--> -/0/5, 5/-/-), you can calculate the time period
+                if (int(str(self.settingsDialogInstance.ui.lineEditHours.text())) >=0 and int(str(self.settingsDialogInstance.ui.lineEditDays.text())) >=0 and
+                   int(str(self.settingsDialogInstance.ui.lineEditMonths.text())) >=0):
+                    if (((shared.config.get('bitmessagesettings', 'hours')) != str(self.settingsDialogInstance.ui.lineEditHours.text())) or #if we update the time period from one time period(f.e 1/0/0) to default -/-/,inform the user that restart is needed in order his changes to take effect.AQWA
+                        ((shared.config.get('bitmessagesettings', 'days')) != str(self.settingsDialogInstance.ui.lineEditDays.text())) or
+                        ((shared.config.get('bitmessagesettings', 'months')) != str(self.settingsDialogInstance.ui.lineEditMonths.text()))):
+                        QMessageBox.about(self, _translate("MainWindow", "Restart"), _translate(
+                        "MainWindow", "You must restart Bitmessage for the time period change to take effect."))
+                    shared.config.set('bitmessagesettings', 'hours', str(#this three commands update the fields of this new setting in keys.dat file.AQWA
+                    self.settingsDialogInstance.ui.lineEditHours.text()))
+                    shared.config.set('bitmessagesettings', 'days', str(
+                    self.settingsDialogInstance.ui.lineEditDays.text()))
+                    shared.config.set('bitmessagesettings', 'months', str(
+                    self.settingsDialogInstance.ui.lineEditMonths.text()))
                     shared.config.set('bitmessagesettings', 'timeperiod', str(int(str(self.settingsDialogInstance.ui.lineEditHours.text())) * 60 * 60 + int(str(self.settingsDialogInstance.ui.lineEditDays.text())) * 24 * 60 * 60 +
                             int(str(self.settingsDialogInstance.ui.lineEditMonths.text())) * (60 * 60 * 24 *365)/12))
-                    
-            if (((shared.config.get('bitmessagesettings', 'hours')) != str(self.settingsDialogInstance.ui.lineEditHours.text())) or#inform user tha he needs to restart bitmessage in order his changes to take effect.AQWA
-                 ((shared.config.get('bitmessagesettings', 'days')) != str(self.settingsDialogInstance.ui.lineEditDays.text())) or
-                   ((shared.config.get('bitmessagesettings', 'months')) != str(self.settingsDialogInstance.ui.lineEditMonths.text()))) :
-              QMessageBox.about(self, _translate("MainWindow", "Restart"), _translate(
-                        "MainWindow", "You must restart Bitmessage for the time period change to take effect."))
-            shared.config.set('bitmessagesettings', 'hours', str(#this three commands update the fields of this new setting in keys.dat file.AQWA
-                    self.settingsDialogInstance.ui.lineEditHours.text()))
-            shared.config.set('bitmessagesettings', 'days', str(
-                    self.settingsDialogInstance.ui.lineEditDays.text()))
-            shared.config.set('bitmessagesettings', 'months', str(
-                    self.settingsDialogInstance.ui.lineEditMonths.text()))
-            #my implementation stops here, there is a line.AQWA
+            #my implementation stops here, it was a line.AQWA
 
             # if str(self.settingsDialogInstance.ui.comboBoxMaxCores.currentText()) == 'All':
             #    shared.config.set('bitmessagesettings', 'maxcores', '99999')