diff --git a/tests/test_create_dir.cpp b/tests/test_create_dir.cpp
index 774dcdec..55b8e255 100644
--- a/tests/test_create_dir.cpp
+++ b/tests/test_create_dir.cpp
@@ -66,10 +66,15 @@ TEST_CASE("dir_name", "[create_dir]") {
     REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/file")) == SPDLOG_FILENAME_T("dir"));
     REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/file.txt")) == SPDLOG_FILENAME_T("dir"));
     REQUIRE(dir_name(SPDLOG_FILENAME_T("dir/file.txt/")) == SPDLOG_FILENAME_T("dir/file.txt"));
-    REQUIRE(dir_name(SPDLOG_FILENAME_T("/dir/file.txt")) == SPDLOG_FILENAME_T("/dir"));
-    REQUIRE(dir_name(SPDLOG_FILENAME_T("//dir/file.txt")) == SPDLOG_FILENAME_T("//dir"));
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("/dir/file.txt")) == SPDLOG_FILENAME_T("/dir"));    
     REQUIRE(dir_name(SPDLOG_FILENAME_T("../file.txt")) == SPDLOG_FILENAME_T(".."));
     REQUIRE(dir_name(SPDLOG_FILENAME_T("./file.txt")) == SPDLOG_FILENAME_T("."));
+
+#ifdef _WIN32    
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("//dir/file.txt")) == SPDLOG_FILENAME_T("//dir/"));
+#else 
+    REQUIRE(dir_name(SPDLOG_FILENAME_T("//dir/file.txt")) == SPDLOG_FILENAME_T("//dir"));
+#endif
 }
 
 #ifdef _WIN32