diff --git a/c4fs.spec b/c4fs.spec
index 8d117a8..9b5de82 100644
--- a/c4fs.spec
+++ b/c4fs.spec
@@ -80,7 +80,12 @@ sed -r -i \
 %install
 %cmake_install
 # Fix wrong installation paths for multilib; it would be nontrivial to patch
-# the source to get this right in the first place.
+# the source to get this right in the first place. The installation path is
+# determined by the scripts in https://github.com/biojppm/cmake, packaged as
+# c4project.
+#
+# Installation directory on Linux 64bit OS
+# https://github.com/biojppm/rapidyaml/issues/256
 if [ '%{_libdir}' != '%{_prefix}/lib' ]
 then
   mkdir -p '%{buildroot}%{_libdir}'