diff --git a/src/DownloadManager.cpp b/src/DownloadManager.cpp
index 00bab7363a..b88fbf7f0e 100644
--- a/src/DownloadManager.cpp
+++ b/src/DownloadManager.cpp
@@ -1025,8 +1025,8 @@ void DownloadManager::RequestChartLeaderBoard(string chartkey)
 				if (FILTERMAN->currentrateonlyforonlineleaderboardrankings)
 					if(lround(tmp.rate * 10000.f) != lround(currentrate * 10000.f))
 						continue;
-				tmp.nocc = score.value("noCC", 0) == 1;
-				tmp.valid = score.value("valid", 0) == 1;
+				tmp.nocc = score.value("noCC", 0) != 0;
+				tmp.valid = score.value("valid", 0) != 0;
 
 				auto ssrs = *(score.find("skillsets"));
 				FOREACH_ENUM(Skillset, ss)
diff --git a/src/NetworkSyncManager.cpp b/src/NetworkSyncManager.cpp
index d2200e063c..1d052686e7 100644
--- a/src/NetworkSyncManager.cpp
+++ b/src/NetworkSyncManager.cpp
@@ -545,7 +545,7 @@ void ETTProtocol::FindJsonChart(NetworkSyncManager* n, json& ch)
 	}
 	else {
 		vector <Song *> AllSongs = SONGMAN->GetAllSongs();
-		for (int i = 0; i < AllSongs.size(); i++)
+		for (size_t i = 0; i < AllSongs.size(); i++)
 		{
 			auto& m_cSong = AllSongs[i];
 			if ((n->m_sArtist.empty() || n->m_sArtist == m_cSong->GetTranslitArtist()) &&
@@ -629,7 +629,7 @@ void ETTProtocol::Update(NetworkSyncManager* n, float fDeltaTime)
 				EndOfGame_PlayerData result;
 				hs.SetScoreKey(score.value("scorekey", ""));
 				hs.SetSSRNormPercent(score.value("ssr_norm", 0));
-				hs.SetEtternaValid(score.value("valid", 0));
+				hs.SetEtternaValid(score.value("valid", 0) !=0);
 				hs.SetModifiers(score.value("mods", ""));
 				FOREACH_ENUM(Skillset, ss)
 					hs.SetSkillsetSSR(ss, score.value(SkillsetToString(ss).c_str(), 0));
@@ -1304,9 +1304,9 @@ void ETTProtocol::ReportHighScore(HighScore* hs, PlayerStageStats& pss)
 		payload["replay"] = json::object();
 		payload["replay"]["noterows"] = json::array();
 		payload["replay"]["offsets"] = json::array();
-		for (int i = 0; i < noterows.size(); i++)
+		for (size_t i = 0; i < noterows.size(); i++)
 			payload["replay"]["noterows"].push_back(noterows[i]);
-		for (int i = 0; i < offsets.size(); i++)
+		for (size_t i = 0; i < offsets.size(); i++)
 			payload["replay"]["offsets"].push_back(offsets[i]);
 	}
 	Send(j);
diff --git a/src/ScreenNetEvaluation.cpp b/src/ScreenNetEvaluation.cpp
index f17d07ea55..cd71d02437 100644
--- a/src/ScreenNetEvaluation.cpp
+++ b/src/ScreenNetEvaluation.cpp
@@ -238,14 +238,14 @@ class LunaScreenNetEvaluation: public Luna<ScreenNetEvaluation>
 public:
 	static int GetNumActivePlayers( T* p, lua_State *L ) { lua_pushnumber( L, p->GetNumActivePlayers() ); return 1; }
 	static int GetHighScore(T* p, lua_State *L) { 
-		if (NSMAN->m_EvalPlayerData.size() - 1 >= p->m_iCurrentPlayer)
+		if (static_cast<int>(NSMAN->m_EvalPlayerData.size()) - 1 >= p->m_iCurrentPlayer)
 			NSMAN->m_EvalPlayerData[p->m_iCurrentPlayer].hs.PushSelf(L);
 		else
 			lua_pushnil(L);
 		return 1;
 	}
 	static int GetOptions(T* p, lua_State *L) {
-		if (NSMAN->m_EvalPlayerData.size() - 1 >= p->m_iCurrentPlayer)
+		if (static_cast<int>(NSMAN->m_EvalPlayerData.size()) - 1 >= p->m_iCurrentPlayer)
 			lua_pushstring(L, NSMAN->m_EvalPlayerData[p->m_iCurrentPlayer].playerOptions);
 		else
 			lua_pushnil(L);