diff --git a/udis86.spec b/udis86.spec
index 10691e6..cb4f4b4 100644
--- a/udis86.spec
+++ b/udis86.spec
@@ -8,7 +8,7 @@ Summary:        A disassembler library for x86 and x86-64
 Group:          System Environment/Libraries
 License:        BSD
 URL:            https://github.com/vmt/udis86
-Source0:        %{name}-%{version}.tar.gz
+Source0:        %{name}-%{gitrev}.tar.xz
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -31,10 +31,11 @@ developing applications that use %{name}.
 
 
 %prep
-%setup -q
+%setup -q -n %{name}-%{gitrev}
 find '(' -name '*.c' -or -name '*.h' ')' -exec chmod 644 {} \;
 
 %build
+./autogen.sh
 %configure --disable-static --enable-shared
 sed -i 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' libtool
 sed -i 's|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' libtool
@@ -47,6 +48,7 @@ make install DESTDIR=$RPM_BUILD_ROOT
 find $RPM_BUILD_ROOT -name '*.la' -exec rm -f {} ';'
 # udis86 overrides "docdir" from automake to datadir/docs
 rm -rf %{buildroot}%{_datadir}/docs
+rm -rf %{buildroot}%{_docdir}
 
 
 %check