diff --git a/texlive.spec b/texlive.spec
index 73f2971..07d13d4 100644
--- a/texlive.spec
+++ b/texlive.spec
@@ -2041,7 +2041,7 @@ development packages for TeXLive.
 %patch0
 %if %{with buildbiber}
 pushd ../biblatex-biber-*
-chmod -R +w .
+chmod -Rf a+rX,u+w,g-w,o-w .
 %patch31 -p0 -b .pmb
 popd
 %endif