diff --git a/srcpkgs/lilypond/template b/srcpkgs/lilypond/template
index 12432742aae..ecb36a0d8dc 100644
--- a/srcpkgs/lilypond/template
+++ b/srcpkgs/lilypond/template
@@ -18,6 +18,7 @@ license="GPL-3.0-or-later, GFDL-1.3-or-later"
 homepage="http://lilypond.org/"
 distfiles="http://lilypond.org/downloads/sources/v2.20/lilypond-${version}.tar.gz"
 checksum=595901323fbc88d3039ca4bdbc2d8c5ce46b182edcb3ea9c0940eba849bba661
+python_version=2 #unverified
 
 if [ -n "${CROSS_BUILD}" ]; then
 	# needs guile-config-1.8 and python-config