diff --git a/compat/mingw.c b/compat/mingw.c
index 8ee0b6408e..388222010b 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1069,6 +1069,37 @@ struct tm *localtime_r(const time_t *timep, struct tm *result)
 	return NULL;
 }
 
+char *mingw_strbuf_realpath(struct strbuf *resolved, const char *path)
+{
+	wchar_t wpath[MAX_PATH];
+	HANDLE h;
+	DWORD ret;
+	int len;
+
+	if (xutftowcs_path(wpath, path) < 0)
+		return NULL;
+
+	h = CreateFileW(wpath, 0,
+			FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
+			OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+	if (h == INVALID_HANDLE_VALUE)
+		return NULL;
+
+	ret = GetFinalPathNameByHandleW(h, wpath, ARRAY_SIZE(wpath), 0);
+	CloseHandle(h);
+	if (!ret || ret >= ARRAY_SIZE(wpath))
+		return NULL;
+
+	len = wcslen(wpath) * 3;
+	strbuf_grow(resolved, len);
+	len = xwcstoutf(resolved->buf, normalize_ntpath(wpath), len);
+	if (len < 0)
+		return NULL;
+	resolved->len = len;
+	return resolved->buf;
+
+}
+
 char *mingw_getcwd(char *pointer, int len)
 {
 	wchar_t cwd[MAX_PATH], wpointer[MAX_PATH];
diff --git a/compat/mingw.h b/compat/mingw.h
index e6fe810ba9..c025906d43 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -445,6 +445,8 @@ static inline void convert_slashes(char *path)
 #define PATH_SEP ';'
 char *mingw_query_user_email(void);
 #define query_user_email mingw_query_user_email
+char *mingw_strbuf_realpath(struct strbuf *resolved, const char *path);
+#define platform_strbuf_realpath mingw_strbuf_realpath
 #if !defined(__MINGW64_VERSION_MAJOR) && (!defined(_MSC_VER) || _MSC_VER < 1800)
 #define PRIuMAX "I64u"
 #define PRId64 "I64d"
diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 46593d0364..d12aebd233 100755
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -423,7 +423,7 @@ test_expect_success CASE_INSENSITIVE_FS 'path is case-insensitive' '
 	git add "$downcased"
 '
 
-test_expect_failure MINGW 'can add files via NTFS junctions' '
+test_expect_success MINGW 'can add files via NTFS junctions' '
 	test_when_finished "cmd //c rmdir junction && rm -rf target" &&
 	test_create_repo target &&
 	cmd //c "mklink /j junction target" &&