diff --git a/src/common/Collision/Management/MMapManager.cpp b/src/common/Collision/Management/MMapManager.cpp
index 0feb091c59..d83339fb17 100644
--- a/src/common/Collision/Management/MMapManager.cpp
+++ b/src/common/Collision/Management/MMapManager.cpp
@@ -165,7 +165,7 @@ namespace MMAP
 
         long pos = ftell(file);
         fseek(file, 0, SEEK_END);
-        if (static_cast<int32>(fileHeader.size) > ftell(file) - pos)
+        if (pos < 0 || static_cast<int32>(fileHeader.size) > ftell(file) - pos)
         {
             TC_LOG_ERROR("maps", "MMAP:loadMap: %03u%02i%02i.mmtile has corrupted data size", mapId, x, y);
             fclose(file);
diff --git a/src/server/game/Entities/Player/Player.cpp b/src/server/game/Entities/Player/Player.cpp
index da2c1dfd97..06de5eb26b 100644
--- a/src/server/game/Entities/Player/Player.cpp
+++ b/src/server/game/Entities/Player/Player.cpp
@@ -315,6 +315,7 @@ Player::Player(WorldSession* session): Unit(true)
     m_session = session;
 
     m_ingametime = 0;
+    m_sharedQuestId = 0;
 
     m_ExtraFlags = 0;