diff --git a/Makefile.am b/Makefile.am
index 0e0af90..9a160a1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -113,6 +113,7 @@ clean-local:
 # Convenience alias for "make check": "make test"
 test: check
 
+# Generate a package manifest if MAINTAINER is set.
 dist-hook:
 	if test -n "$(MAINTAINER)"; then \
 	  cd "$(top_distdir)" \