diff --git a/supermin.spec b/supermin.spec
index dc2b406..060a1aa 100644
--- a/supermin.spec
+++ b/supermin.spec
@@ -41,6 +41,8 @@ BuildRequires:  ocaml
 BuildRequires:  ocaml-findlib
 BuildRequires:  ocaml-inifiles-devel
 BuildRequires:  pkg-config
+BuildRequires:  zlib-devel
+BuildRequires:  xz-devel
 
 %description
 supermin is a tool for building supermin appliances. These are tiny
@@ -53,6 +55,7 @@ you need to boot one of them.
 
 %build
 export ZYPPER=zypper
+export ZYPPER=/usr/bin/zypper
 touch INSTALL NEWS AUTHORS ChangeLog
 autoreconf -fi
 %configure --help