diff --git a/texlive-specs.spec b/texlive-specs.spec
index bbce49a..f518519 100644
--- a/texlive-specs.spec
+++ b/texlive-specs.spec
@@ -1,3 +1,4 @@
+%define build_slice [0-9] [A-Z] a
 #
 # spec file for package texlive-specs
 #