diff --git a/brltty.spec b/brltty.spec
index 671c2eb..987241b 100644
--- a/brltty.spec
+++ b/brltty.spec
@@ -35,6 +35,8 @@ Summary: Braille display driver for Linux/Unix
 BuildRequires: byacc, glibc-kernheaders, bluez-libs-devel, systemd
 BuildRequires: gettext, at-spi2-core-devel, espeak-devel
 BuildRequires: python2-tools
+BuildRequires: /usr/bin/2to3
+
 Requires: brlapi%{?_isa} = %{api_version}-%{release}
 # work around a bug in the install process:
 Requires(post): coreutils