diff --git a/ocaml-camlp5.spec b/ocaml-camlp5.spec
index eb66d38..f23d9e8 100644
--- a/ocaml-camlp5.spec
+++ b/ocaml-camlp5.spec
@@ -23,9 +23,10 @@ Patch0:         camlp5-8.00-kill-warn-error.patch
 # Upstream in > 8.00.
 Patch1:         2865ecfe5e02f8895c555396993b49b3b08a3550.patch
 
-BuildRequires: make
+BuildRequires:  make
 BuildRequires:  ocaml
 BuildRequires:  ocaml-ocamldoc
+BuildRequires:  perl
 
 %global __ocaml_requires_opts -i Asttypes -i Parsetree -i Pa_extend
 %global __ocaml_provides_opts -i Dynlink -i Dynlinkaux -i Pa_extend