diff --git a/app/src/main/java/ua/samosfator/moduleok/App.java b/app/src/main/java/ua/samosfator/moduleok/App.java
index 62e424d..91543b3 100644
--- a/app/src/main/java/ua/samosfator/moduleok/App.java
+++ b/app/src/main/java/ua/samosfator/moduleok/App.java
@@ -1,6 +1,8 @@
 package ua.samosfator.moduleok;
 
+import android.app.ActivityManager;
 import android.app.Application;
+import android.app.Service;
 import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
@@ -77,4 +79,14 @@ public static String getFormattedUpdateTime() {
     public static void setUpdateTime(Date updateTime) {
         App.updateTime = updateTime;
     }
+
+    public static boolean isServiceRunning(Class<? extends Service> serviceClass) {
+        ActivityManager manager = (ActivityManager) App.getContext().getSystemService(Context.ACTIVITY_SERVICE);
+        for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
+            if (serviceClass.getName().equals(service.service.getClassName())) {
+                return true;
+            }
+        }
+        return false;
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ua/samosfator/moduleok/MainActivity.java b/app/src/main/java/ua/samosfator/moduleok/MainActivity.java
index a38f162..e23ba3e 100644
--- a/app/src/main/java/ua/samosfator/moduleok/MainActivity.java
+++ b/app/src/main/java/ua/samosfator/moduleok/MainActivity.java
@@ -21,8 +21,6 @@
 import ua.samosfator.moduleok.event.LogoutEvent;
 import ua.samosfator.moduleok.event.RefreshEndEvent;
 import ua.samosfator.moduleok.event.RefreshEvent;
-import ua.samosfator.moduleok.fragment.last_total_fragment.LastTotalFragment;
-import ua.samosfator.moduleok.fragment.modules_fragment.ModulesFragment;
 import ua.samosfator.moduleok.fragment.navigation_drawer_fragment.NavigationDrawerFragment;
 import ua.samosfator.moduleok.notification.ScoreCheckerService;
 
@@ -44,7 +42,7 @@ protected void onCreate(Bundle savedInstanceState) {
         initToolbar();
         initNavigationDrawer();
 
-        if (Auth.isLoggedIn() && App.hasInternetConnection()) {
+        if (Auth.isLoggedIn() && App.hasInternetConnection() && !App.isServiceRunning(ScoreCheckerService.class)) {
             startService(new Intent(this, ScoreCheckerService.class));
         }
     }
diff --git a/app/src/main/java/ua/samosfator/moduleok/notification/NearbyModules.java b/app/src/main/java/ua/samosfator/moduleok/notification/NearbyModules.java
index 6d77f90..86749bc 100644
--- a/app/src/main/java/ua/samosfator/moduleok/notification/NearbyModules.java
+++ b/app/src/main/java/ua/samosfator/moduleok/notification/NearbyModules.java
@@ -27,6 +27,7 @@ public static int getCount() {
     private static void initModulesDatesList() {
         modulesDates.clear();
         List<Subject> subjects = getCurrentSemesterSubjects();
+        System.setProperty("java8.util.Spliterators.assume.oracle.collections.impl", "false");
         StreamSupport.stream(subjects)
                 .map(Subject::getModules)
                 .map(StreamSupport::stream)
diff --git a/app/src/main/java/ua/samosfator/moduleok/notification/ScoreCheckerService.java b/app/src/main/java/ua/samosfator/moduleok/notification/ScoreCheckerService.java
index 66d8c5a..a9adf62 100644
--- a/app/src/main/java/ua/samosfator/moduleok/notification/ScoreCheckerService.java
+++ b/app/src/main/java/ua/samosfator/moduleok/notification/ScoreCheckerService.java
@@ -38,6 +38,7 @@ public IBinder onBind(Intent intent) {
     @Override
     public void onCreate() {
         App.registerClassForEventBus(this);
+        System.setProperty("java8.util.Spliterators.assume.oracle.collections.impl", "false");
         Toast.makeText(this, "Congrats! ScoreCheckerService Created", Toast.LENGTH_LONG).show();
         Log.d(TAG, "onCreate");
     }