diff --git a/src/db/serverdbnoaction.h b/src/db/serverdbnoaction.h
index 027e09c9..28e68685 100644
--- a/src/db/serverdbnoaction.h
+++ b/src/db/serverdbnoaction.h
@@ -30,19 +30,19 @@ public:
     ServerDBNoAction();
 	virtual ~ServerDBNoAction();
 
-	virtual void Init(const std::string &host, const std::string &user, const std::string &pwd,
-					  const std::string &database, const std::string &encryptionKey) {}
+	virtual void Init(const std::string &/*host*/, const std::string &/*user*/, const std::string &/*pwd*/,
+					  const std::string &/*database*/, const std::string &/*encryptionKey*/) {}
 
 	virtual void Start() {}
 	virtual void Stop() {}
 
-	virtual void AsyncPlayerLogin(unsigned requestId, const std::string &playerName) {}
-	virtual void PlayerPostLogin(DB_id playerId, const std::string &avatarHash, const std::string &avatarType) {}
-	virtual void PlayerLogout(DB_id playerId) {}
+	virtual void AsyncPlayerLogin(unsigned /*requestId*/, const std::string &/*playerName*/) {}
+	virtual void PlayerPostLogin(DB_id /*playerId*/, const std::string &/*avatarHash*/, const std::string &/*avatarType*/) {}
+	virtual void PlayerLogout(DB_id /*playerId*/) {}
 
-	virtual void AsyncCreateGame(unsigned requestId, const std::string &gameName) {}
-	virtual void SetGamePlayerPlace(DB_id gameId, DB_id playerId, unsigned place) {}
-	virtual void EndGame(DB_id gameId) {}
+	virtual void AsyncCreateGame(unsigned /*requestId*/, const std::string &/*gameName*/) {}
+	virtual void SetGamePlayerPlace(DB_id /*gameId*/, DB_id /*playerId*/, unsigned /*place*/) {}
+	virtual void EndGame(DB_id /*gameId*/) {}
 };
 
 #endif // _SERVERDBNOACTION_H_
diff --git a/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp b/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp
index 416ff810..e2256725 100644
--- a/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp
+++ b/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp
@@ -1434,7 +1434,7 @@ void gameLobbyDialogImpl::showNickListContextMenu(QPoint p)
     if(myNickListModel->rowCount() && myNickListSelectionModel->currentIndex().isValid()) {
 
         assert(mySession);
-        int playerUid = myNickListSelectionModel->currentIndex().data(Qt::UserRole).toUInt();
+		unsigned playerUid = myNickListSelectionModel->currentIndex().data(Qt::UserRole).toUInt();
 
         if(inGame && mySession->getClientGameInfo(mySession->getClientCurrentGameId()).data.gameType == GAME_TYPE_INVITE_ONLY && playerUid != mySession->getClientUniquePlayerId() && !mySession->getClientPlayerInfo(playerUid).isGuest) {
 
diff --git a/src/gui/qt/styles/gametablestylereader.cpp b/src/gui/qt/styles/gametablestylereader.cpp
index 8b00ac82..ce103fdf 100644
--- a/src/gui/qt/styles/gametablestylereader.cpp
+++ b/src/gui/qt/styles/gametablestylereader.cpp
@@ -860,8 +860,8 @@ QString GameTableStyleReader::getActionPic(int action)
                 return ActionWinnerI18NPic;
         }
         break;
-    default: return QString("");
     }
+	return QString("");
 }
 
 void GameTableStyleReader::setButtonsStyle(MyActionButton *br, MyActionButton *cc, MyActionButton *f, MyActionButton *a, int state)
diff --git a/src/net/common/servergamestate.cpp b/src/net/common/servergamestate.cpp
index d7088d6c..b880501b 100644
--- a/src/net/common/servergamestate.cpp
+++ b/src/net/common/servergamestate.cpp
@@ -1357,7 +1357,7 @@ ServerGameStateWaitPlayerAction::TimerTimeout(const boost::system::error_code &e
 			curPlayer->incrementActionTimeoutCounter();
 
 			if (server->GetGameData().gameType == GAME_TYPE_RANKING
-				&& server->GetGameData().playerActionTimeoutSec >= server->GetSmallDelaySec())
+				&& server->GetGameData().playerActionTimeoutSec >= (int)server->GetSmallDelaySec())
 			{
 				if (curPlayer->getActionTimeoutCounter() == SERVER_WARNING_ACTION_TIMEOUT_THRESHOLD)
 				{
diff --git a/src/net/common/serverlobbythread.cpp b/src/net/common/serverlobbythread.cpp
index 45d005a0..3edac914 100644
--- a/src/net/common/serverlobbythread.cpp
+++ b/src/net/common/serverlobbythread.cpp
@@ -1677,7 +1677,7 @@ ServerLobbyThread::TimerUpdateClientLoginLock(const boost::system::error_code &e
 		{
 			TimerClientAddressMap::iterator next = i;
 			++next;
-			if (i->second.elapsed().total_seconds() > SERVER_INIT_LOGIN_CLIENT_LOCK_SEC)
+			if (i->second.elapsed().total_seconds() > (int)SERVER_INIT_LOGIN_CLIENT_LOCK_SEC)
 				m_timerClientAddressMap.erase(i);
 			i = next;
 		}