diff --git a/tree.spec b/tree.spec
index d3d2316..b569172 100644
--- a/tree.spec
+++ b/tree.spec
@@ -27,6 +27,9 @@ utility.
 %prep
 %autosetup -p1
 
+# do not escape UTF-8 chars in file names by default in UTF-8 locale (#1480778)
+sed -e 's/LINUX/__linux__/' -i tree.c
+
 %build
 make CFLAGS="$RPM_OPT_FLAGS $(getconf LFS_CFLAGS)" %{?_smp_mflags}
 
@@ -46,6 +49,7 @@ chmod -x $RPM_BUILD_ROOT%{_mandir}/man1/tree.1
 
 %changelog
 * Mon Aug 14 2017 Kamil Dudka <kdudka@redhat.com> - 1.7.0-11
+- do not escape UTF-8 chars in file names by default in UTF-8 locale (#1480778)
 - modernize spec file (Group, BuildRoot, autosetup, clean, defattr)
 
 * Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.0-10