diff --git a/src/server/game/Chat/ChatCommands/ChatCommandHelpers.h b/src/server/game/Chat/ChatCommands/ChatCommandHelpers.h
index 7b8a3ad5b8..f9eb86a306 100644
--- a/src/server/game/Chat/ChatCommands/ChatCommandHelpers.h
+++ b/src/server/game/Chat/ChatCommands/ChatCommandHelpers.h
@@ -19,6 +19,7 @@
 #define TRINITY_CHATCOMMANDHELPERS_H
 
 #include "advstd.h"
+#include <cstddef>
 #include <type_traits>
 
 namespace Trinity {
diff --git a/src/server/game/Server/WorldSocket.cpp b/src/server/game/Server/WorldSocket.cpp
index a12a3829e5..8f61c00505 100644
--- a/src/server/game/Server/WorldSocket.cpp
+++ b/src/server/game/Server/WorldSocket.cpp
@@ -488,11 +488,11 @@ WorldSocket::ReadDataHandlerResult WorldSocket::ReadDataHandler()
                 _worldSession->ResetTimeOutTime(true);
                 return ReadDataHandlerResult::Ok;
             }
-            TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler: client {} sent CMSG_KEEP_ALIVE without being authenticated", GetRemoteIpAddress().to_string());
+            TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler: client %s sent CMSG_KEEP_ALIVE without being authenticated", GetRemoteIpAddress().to_string().c_str());
             return ReadDataHandlerResult::Error;
         case CMSG_LOG_DISCONNECT:
             LogOpcodeText(opcode, sessionGuard);
-            TC_LOG_DEBUG("network", "WorldSocket::ReadDataHandler: client {} sent CMSG_LOG_DISCONNECT reason {}", GetRemoteIpAddress().to_string(), packet.read<uint32>());
+            TC_LOG_DEBUG("network", "WorldSocket::ReadDataHandler: client %s sent CMSG_LOG_DISCONNECT reason %u", GetRemoteIpAddress().to_string().c_str(), packet.read<uint32>());
             break;
         case CMSG_ENABLE_NAGLE:
             LogOpcodeText(opcode, sessionGuard);
@@ -506,7 +506,7 @@ WorldSocket::ReadDataHandlerResult WorldSocket::ReadDataHandler()
             WorldPackets::Auth::ConnectToFailed connectToFailed(std::move(packet));
             if (!connectToFailed.ReadNoThrow())
             {
-                TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler(): client {} sent malformed CMSG_CONNECT_TO_FAILED", GetRemoteIpAddress().to_string());
+                TC_LOG_ERROR("network", "WorldSocket::ReadDataHandler(): client %s sent malformed CMSG_CONNECT_TO_FAILED", GetRemoteIpAddress().to_string().c_str());
                 return ReadDataHandlerResult::Error;
             }
             HandleConnectToFailed(connectToFailed);
@@ -530,7 +530,7 @@ WorldSocket::ReadDataHandlerResult WorldSocket::ReadDataHandler()
             ClientOpcodeHandler const* handler = opcodeTable[opcode];
             if (!handler)
             {
-                TC_LOG_ERROR("network.opcode", "No defined handler for opcode %s sent by %s", GetOpcodeNameForLogging(static_cast<OpcodeClient>(packet.GetOpcode())).c_str(), _worldSession->GetPlayerInfo());
+                TC_LOG_ERROR("network.opcode", "No defined handler for opcode %s sent by %s", GetOpcodeNameForLogging(static_cast<OpcodeClient>(packet.GetOpcode())).c_str(), _worldSession->GetPlayerInfo().c_str());
                 break;
             }
 
@@ -554,7 +554,7 @@ void WorldSocket::LogOpcodeText(OpcodeClient opcode, std::unique_lock<std::mutex
     }
     else
     {
-        TC_LOG_TRACE("network.opcode", "C->S: %s %s", (_worldSession ? _worldSession->GetPlayerInfo() : GetRemoteIpAddress().to_string()).c_str(),
+        TC_LOG_TRACE("network.opcode", "C->S: %s %s", (_worldSession ? _worldSession->GetPlayerInfo().c_str() : GetRemoteIpAddress().to_string()).c_str(),
             GetOpcodeNameForLogging(opcode).c_str());
     }
 }
diff --git a/src/server/game/Spells/Auras/SpellAuraEffects.cpp b/src/server/game/Spells/Auras/SpellAuraEffects.cpp
index 39b2049f4a..b646183ea0 100644
--- a/src/server/game/Spells/Auras/SpellAuraEffects.cpp
+++ b/src/server/game/Spells/Auras/SpellAuraEffects.cpp
@@ -741,14 +741,14 @@ void AuraEffect::CalculateSpellMod()
         {
             isValid = false;
             if (logErrors())
-                TC_LOG_ERROR("spells.aura.effect", "Aura script for spell id {} created invalid spell modifier op {}", GetId(), AsUnderlyingType(m_spellmod->op));
+                TC_LOG_ERROR("spells.aura.effect", "Aura script for spell id %u created invalid spell modifier op %u", GetId(), AsUnderlyingType(m_spellmod->op));
         }
 
         if (m_spellmod->type >= SPELLMOD_END)
         {
             isValid = false;
             if (logErrors())
-                TC_LOG_ERROR("spells.aura.effect", "Aura script for spell id {} created invalid spell modifier type {}", GetId(), AsUnderlyingType(m_spellmod->type));
+                TC_LOG_ERROR("spells.aura.effect", "Aura script for spell id %u created invalid spell modifier type %u", GetId(), AsUnderlyingType(m_spellmod->type));
         }
 
         if (!isValid)