diff --git a/swig/corpus2.i b/swig/corpus2.i
old mode 100644
new mode 100755
index cf47ba495ac3361d8243854d751a22628ff65851..2734373192148de730f8a93ca2c8b0e33e4082bd
--- a/swig/corpus2.i
+++ b/swig/corpus2.i
@@ -27,6 +27,7 @@
 %include "document.i"
 %include "corpus.i"
 %include "relationreader.i"
+%include "relationwriter.i"
 %include "cclrelreader.i"
 %include "documentreader.i"
 %include "corpusreader.i"