diff --git a/configuration/configure.ac b/configuration/configure.ac
index 6c7e7d1..49349cb 100644
--- a/configuration/configure.ac
+++ b/configuration/configure.ac
@@ -201,4 +201,10 @@
 AC_PATH_PROG(SITECOPY, sitecopy)
 
 
+dnl
+dnl CSS development.
+dnl
+AC_PATH_PROG(SASS, sass)
+
+
 AC_OUTPUT