diff --git a/src/JsonUtil.cpp b/src/JsonUtil.cpp
index be736ea4b5..755036e770 100644
--- a/src/JsonUtil.cpp
+++ b/src/JsonUtil.cpp
@@ -14,8 +14,7 @@ bool JsonUtil::LoadFromString(Json::Value &root, RString sData, RString &sErrorO
 	if (!parsingSuccessful)
 	{
 		RString err = reader.getFormatedErrorMessages();
-		sErrorOut = ssprintf("JSON: LoadFromFileShowErrors failed: %s", err.c_str());
-		LOG->Warn(sErrorOut);
+		LOG->Warn("JSON: LoadFromFileShowErrors failed: %s", err.c_str());
 		return false;
 	}
 	return true;
diff --git a/src/NetworkSyncManager.cpp b/src/NetworkSyncManager.cpp
index b49720a46a..66a4a1b4de 100644
--- a/src/NetworkSyncManager.cpp
+++ b/src/NetworkSyncManager.cpp
@@ -237,7 +237,7 @@ void NetworkSyncManager::ReportScore(int playerID, int step, int score, int comb
 	if( !useSMserver ) //Make sure that we are using the network
 		return;
 
-	LOG->Trace( ssprintf("Player ID %i combo = %i", playerID, combo) );
+	LOG->Trace( "Player ID %i combo = %i", playerID, combo );
 	m_packet.ClearPacket();
 
 	m_packet.Write1( NSCGSU );