diff --git a/libtasn1.spec b/libtasn1.spec
index c2b190e..3a6f4df 100644
--- a/libtasn1.spec
+++ b/libtasn1.spec
@@ -14,6 +14,7 @@ Source2:        gpgkey-B1D2BD1375BECB784CF4F8C4D73CF638C53C06BE.gpg
 Patch1:		libtasn1-3.4-rpath.patch
 
 BuildRequires:	gnupg2
+BuildRequires:	git-core
 BuildRequires:	gcc
 BuildRequires:	bison, pkgconfig, help2man
 BuildRequires:	autoconf, automake, libtool
@@ -56,10 +57,9 @@ data.
 
 
 %prep
-gpgv2 --keyring %{SOURCE2} %{SOURCE1} %{SOURCE0}
-%setup -q
+%{gpgverify} --keyring='%{SOURCE2}' --signature='%{SOURCE1}' --data='%{SOURCE0}'
 
-%patch1 -p1 -b .rpath
+%autosetup -p1 -S git
 
 %build
 autoreconf -v -f --install