diff --git a/lib/hdb/Makefile.am b/lib/hdb/Makefile.am
index 4b662692b..ba27f0b82 100644
--- a/lib/hdb/Makefile.am
+++ b/lib/hdb/Makefile.am
@@ -43,10 +43,10 @@ libhdb_la_LIBADD = ../krb5/libkrb5.la ../asn1/libasn1.la ../roken/libroken.la $(
 $(libhdb_la_OBJECTS): $(srcdir)/hdb-protos.h $(srcdir)/hdb-private.h
 
 $(srcdir)/hdb-protos.h:
-	cd $(srcdir); perl ../../cf/make-proto.pl -o hdb-protos.h $(libhdb_la_SOURCES) || rm -f hdb-protos.h
+	cd $(srcdir); perl ../../cf/make-proto.pl -q -P comment -o hdb-protos.h $(libhdb_la_SOURCES) || rm -f hdb-protos.h
 
 $(srcdir)/hdb-private.h:
-	cd $(srcdir); perl ../../cf/make-proto.pl -p hdb-private.h $(libhdb_la_SOURCES) || rm -f hdb-private.h
+	cd $(srcdir); perl ../../cf/make-proto.pl -q -P comment -p hdb-private.h $(libhdb_la_SOURCES) || rm -f hdb-private.h
 
 $(foo) hdb_asn1.h: asn1_files