diff --git a/gtk-sharp2.spec b/gtk-sharp2.spec
index e4d3d5f..e0606b9 100644
--- a/gtk-sharp2.spec
+++ b/gtk-sharp2.spec
@@ -11,6 +11,7 @@ Patch0:         gtk-sharp2-2.12.12-glib-include.patch
 
 BuildRequires:  mono-devel gtk2-devel libglade2-devel monodoc
 BuildRequires:  autoconf, automake, libtool
+BuildRequires:  perl-generators
 
 # Mono only available on these:
 ExclusiveArch: %mono_arches