diff --git a/src/utils/utils.cpp b/src/utils/utils.cpp
index 52d17748..b899287e 100644
--- a/src/utils/utils.cpp
+++ b/src/utils/utils.cpp
@@ -172,14 +172,14 @@ auto filetime_to_unix_time(const FILETIME &ft) -> remote::file_time {
   LARGE_INTEGER date{};
   date.HighPart = ft.dwHighDateTime;
   date.LowPart = ft.dwLowDateTime;
-  date.QuadPart -= 116444736000000000ull;
+  date.QuadPart -= 116444736000000000ULL;
 
-  return date.QuadPart * 100ull;
+  return date.QuadPart * 100ULL;
 }
 
 void unix_time_to_filetime(const remote::file_time &ts, FILETIME &ft) {
-  const auto win_time = (ts / 100ULl) + 116444736000000000ull;
-  ft.dwHighDateTime = win_time >> 32u;
+  const auto win_time = (ts / 100ULL) + 116444736000000000ULL;
+  ft.dwHighDateTime = win_time >> 32U;
   ft.dwLowDateTime = win_time & 0xFFFFFFFF;
 }
 #endif