diff --git a/nbdkit.spec b/nbdkit.spec
index e6bc020..9fa6e47 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -18,6 +18,8 @@ Source0:        http://libguestfs.org/download/nbdkit/%{name}-%{version}.tar.gz
 Patch1:         0001-Add-mandir-to-dump-config-output.patch
 Patch2:         0002-Update-TODO.patch
 Patch3:         0003-Add-support-for-newstyle-NBD-protocol-RHBZ-1297100.patch
+# Because patch3 patches Makefile.am, we need:
+BuildRequires:  automake, autoconf, libtool
 
 BuildRequires:  /usr/bin/pod2man
 %if 0%{?have_libguestfs}