2 files changed, 4 insertions, 3 deletions
diff --git a/src/server/shared/Logging/AppenderFile.cpp b/src/server/shared/Logging/AppenderFile.cpp
index 93d53bcc30d..54458346bb9 100644
--- a/src/server/shared/Logging/AppenderFile.cpp
+++ b/src/server/shared/Logging/AppenderFile.cpp
@@ -40,7 +40,7 @@ AppenderFile::~AppenderFile()
 
 void AppenderFile::_write(LogMessage const& message)
 {
-    bool exceedMaxSize = maxFileSize > 0 && (fileSize + message.Size()) > maxFileSize;
+    bool exceedMaxSize = maxFileSize > 0 && (fileSize.value() + message.Size()) > maxFileSize;
 
     if (dynamicName)
     {
@@ -56,7 +56,7 @@ void AppenderFile::_write(LogMessage const& message)
 
     fprintf(logfile, "%s%s", message.prefix.c_str(), message.text.c_str());
     fflush(logfile);
-    fileSize += message.Size();
+    fileSize += uint64(message.Size());
 
     if (dynamicName)
         CloseFile();
diff --git a/src/server/shared/Logging/AppenderFile.h b/src/server/shared/Logging/AppenderFile.h
index c15974799e1..de94a46d692 100644
--- a/src/server/shared/Logging/AppenderFile.h
+++ b/src/server/shared/Logging/AppenderFile.h
@@ -19,6 +19,7 @@
 #define APPENDERFILE_H
 
 #include "Appender.h"
+#include "ace/Atomic_Op.h"
 
 class AppenderFile: public Appender
 {
@@ -37,7 +38,7 @@ class AppenderFile: public Appender
         bool dynamicName;
         bool backup;
         uint64 maxFileSize;
-        uint64 fileSize;
+        ACE_Atomic_Op<ACE_Thread_Mutex, uint64> fileSize;
 };
 
 #endif