diff --git a/l3build.dtx b/l3build.dtx
index de05f280..bba125b0 100644
--- a/l3build.dtx
+++ b/l3build.dtx
@@ -50,9 +50,9 @@
 \newcommand\luavarseparator{}
 \makeatother
 \def\allluavars{
-\luavarset{module}{""}{The name of the module.}
-\luavarset{bundle}{""}{The name of the bundle in which the module belongs.}
-\luavarset{ctanpkg}{bundle}{Name of the bundle on CTAN}
+\luavarset{module}{""}{The name of the module}
+\luavarset{bundle}{""}{The name of the bundle in which the module belongs (where relevant)}
+\luavarset{ctanpkg}{bundle}{Name of the CTAN package matching this module}
 \luavarseparator
 \luavarset{modules}{\{~\}}{The list of all modules in a bundle (when not auto-detecting)}
 \luavarset{exclmodules}{\{~\}}{Directories to be excluded from automatic module detection}