diff --git a/strongswan.spec b/strongswan.spec
index 4fe4fff..f6be2ff 100644
--- a/strongswan.spec
+++ b/strongswan.spec
@@ -33,6 +33,7 @@ Patch1:         strongswan-5.9.7-error-no-format.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  gnupg2
+BuildRequires:  libtool
 BuildRequires:  make
 BuildRequires:  gcc
 BuildRequires:  systemd
@@ -154,7 +155,7 @@ for Strongswan runtime configuration from perl applications.
 
 %build
 # only for snapshots
-#autoreconf
+autoreconf -fiv
 
 # --with-ipsecdir moves internal commands to /usr/libexec/strongswan
 # --bindir moves 'pki' command to /usr/libexec/strongswan