diff --git a/sugar-view-slides.spec b/sugar-view-slides.spec
index 0dfc758..3a1af10 100644
--- a/sugar-view-slides.spec
+++ b/sugar-view-slides.spec
@@ -9,6 +9,7 @@ URL:            http://wiki.laptop.org/go/View_Slides
 Source0:        http://download.sugarlabs.org/sources/honey/ViewSlides/ViewSlides-%{version}.tar.bz2
 BuildArch:      noarch
 
+BuildRequires:  python-unversioned-command
 BuildRequires:  python2
 BuildRequires:  sugar-toolkit
 BuildRequires:  gettext