--- a/deps/spdlog/include/spdlog/details/os-inl.h
+++ b/deps/spdlog/include/spdlog/details/os-inl.h
@@ -236,20 +236,11 @@
 #    else
     int fd = ::fileno(f);
 #    endif
-// 64 bits(but not in osx or cygwin, where fstat64 is deprecated)
-#    if (defined(__linux__) || defined(__sun) || defined(_AIX)) && (defined(__LP64__) || defined(_LP64))
-    struct stat64 st;
-    if (::fstat64(fd, &st) == 0)
-    {
-        return static_cast<size_t>(st.st_size);
-    }
-#    else // other unix or linux 32 bits or cygwin
     struct stat st;
     if (::fstat(fd, &st) == 0)
     {
         return static_cast<size_t>(st.st_size);
     }
-#    endif
 #endif
     throw_spdlog_ex("Failed getting file size from fd", errno);
     return 0; // will not be reached.