diff --git a/include/spdlog/details/os.h b/include/spdlog/details/os.h
index 82f3a900..b17d8486 100644
--- a/include/spdlog/details/os.h
+++ b/include/spdlog/details/os.h
@@ -22,16 +22,12 @@ SPDLOG_API std::tm gmtime(const std::time_t &time_tt) noexcept;
 SPDLOG_API std::tm gmtime() noexcept;
 
 // eol definition
-#if !defined(SPDLOG_EOL)
-    #ifdef _WIN32
-        #define SPDLOG_EOL "\r\n"
-    #else
-        #define SPDLOG_EOL "\n"
-    #endif
+#ifdef _WIN32
+    constexpr static const char *default_eol = "\r\n";
+#else
+    constexpr static const char *default_eol = "\n";
 #endif
 
-constexpr static const char *default_eol = SPDLOG_EOL;
-
 // folder separator
 #if !defined(SPDLOG_FOLDER_SEPS)
     #ifdef _WIN32