diff --git a/nl_NL.ISO8859-1/articles/Makefile b/nl_NL.ISO8859-1/articles/Makefile
index 47f9894bb5..218ced2f04 100644
--- a/nl_NL.ISO8859-1/articles/Makefile
+++ b/nl_NL.ISO8859-1/articles/Makefile
@@ -5,6 +5,7 @@
 
 SUBDIR =
 SUBDIR+= contributing
+SUBDIR+= contributing-ports
 SUBDIR+= explaining-bsd
 SUBDIR+= problem-reports
 SUBDIR+= solid-state