diff --git a/src/main/java/cz/muni/fi/pa165/icehockeymanager/services/TeamServiceImpl.java b/src/main/java/cz/muni/fi/pa165/icehockeymanager/services/TeamServiceImpl.java
index 33a1b3fb6052b35a4e328b0c009a7f0dfc586f59..6e0f297cbb0ed44a27ebeb553776c062cbac5722 100644
--- a/src/main/java/cz/muni/fi/pa165/icehockeymanager/services/TeamServiceImpl.java
+++ b/src/main/java/cz/muni/fi/pa165/icehockeymanager/services/TeamServiceImpl.java
@@ -53,15 +53,20 @@ public class TeamServiceImpl implements TeamService {
 
     @Override
     public void addHomeGame(Team homeTeam, Game game) {
+        if (game == null) {
+            throw new NullPointerException("The game is null");
+        }
         homeTeam.addHomeGame(game);
         teamDao.update(homeTeam);
     }
 
     @Override
     public void addAwayGame(Team awayTeam, Game game) {
+        if (game == null) {
+            throw new NullPointerException("The game is null");
+        }
         awayTeam.addAwayGame(game);
         teamDao.update(awayTeam);
-
     }
 
     @Override