diff --git a/strongswan.spec b/strongswan.spec
index e99e8c7..47851e3 100644
--- a/strongswan.spec
+++ b/strongswan.spec
@@ -35,7 +35,7 @@ protocols in conjunction with the native NETKEY IPsec stack of the Linux kernel.
 %package_help
 
 %prep
-%autosetup -n %{name}-%{version} -p1
+%autosetup -n %{name}-%{version}
 
 %build
 %configure --disable-static --with-ipsec-script=strongswan --sysconfdir=%{_sysconfdir}/strongswan \