diff --git a/Source/IO/FS/FS.NT.cpp b/Source/IO/FS/FS.NT.cpp
index 9750c43a..04e39c9e 100644
--- a/Source/IO/FS/FS.NT.cpp
+++ b/Source/IO/FS/FS.NT.cpp
@@ -133,7 +133,7 @@ namespace Aurora::IO::FS
 
             if (!::ReadFile(fileHandle, &buffer[offset], blockSize, &read, NULL))
             {
-                LogWarn("ReadFile IO Error: 0x%x {}", GetLastError(), path);
+                LogWarn("ReadFile IO Error: 0x{:x} {}", GetLastError(), path);
                 SysPushErrorIO();
                 goto out;
             }
diff --git a/Source/IO/FS/FileStream.NT.cpp b/Source/IO/FS/FileStream.NT.cpp
index 92b75840..f693ad3c 100644
--- a/Source/IO/FS/FileStream.NT.cpp
+++ b/Source/IO/FS/FileStream.NT.cpp
@@ -39,7 +39,7 @@ namespace Aurora::IO::FS
 
         if (SetFilePointerEx(handle_, distance, &pos, FILE_CURRENT) == INVALID_SET_FILE_POINTER)
         {
-            LogWarn("SetFilePointerEx IO Error: 0x%x, {}", GetLastError(), path_);
+            LogWarn("SetFilePointerEx IO Error: 0x{:x}, {}", GetLastError(), path_);
             SysPushErrorIO();
             return 0;
         }
@@ -62,7 +62,7 @@ namespace Aurora::IO::FS
 
         if (SetFilePointerEx(handle_, distance, &pos, FILE_CURRENT) == INVALID_SET_FILE_POINTER)
         {
-            LogWarn("SetFilePointerEx IO Error: 0x%x, {}", GetLastError(), path_);
+            LogWarn("SetFilePointerEx IO Error: 0x{:x}, {}", GetLastError(), path_);
             SysPushErrorIO();
             return false;
         }