diff --git a/rng-tools.spec b/rng-tools.spec
index 87fe6f9..92ea776 100644
--- a/rng-tools.spec
+++ b/rng-tools.spec
@@ -23,7 +23,7 @@ and supplies entropy from them to the system kernel's /dev/random machinery.
 %package_help
 
 %prep
-%autosetup -n %{name}-%{version}
+%autosetup -n %{name}-%{version} -a 2 -p1
 
 %build
 ./autogen.sh