diff --git a/libldb.spec b/libldb.spec
index 9d8c2eb..6e7118f 100644
--- a/libldb.spec
+++ b/libldb.spec
@@ -129,14 +129,13 @@ Development files for the Python bindings for the LDB library
 %endif
 
 %prep
+zcat %{SOURCE0} | gpgv2 --quiet --keyring %{SOURCE2} %{SOURCE1} -
 %autosetup -n ldb-%{version} -p1
 
 # binary diffs are not supported
 cp -f %{SOURCE3} tests/guidindexpackv1.ldb
 
 %build
-zcat %{SOURCE0} | gpgv2 --quiet --keyring %{SOURCE2} %{SOURCE1} -
-
 # workaround for https://bugzilla.redhat.com/show_bug.cgi?id=1217376
 export python_LDFLAGS=""