diff --git a/src/libimp/platform/win/system.h b/src/libimp/platform/win/system.h
index b4c6a03..be23f92 100644
--- a/src/libimp/platform/win/system.h
+++ b/src/libimp/platform/win/system.h
@@ -55,7 +55,7 @@ std::string error_msg(result_code code) noexcept {
           MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
           (LPTSTR)&lpErrText,
           0, NULL) == 0) {
-      log.error("FormatMessage fails. return = {}", ::GetLastError());
+      log.error("FormatMessage fails. return = {}", error_code());
       return {};
     }
     LIBIMP_UNUSED auto buf_guard = std::unique_ptr<std::remove_pointer_t<LPVOID>,