diff --git a/.gitattributes b/.gitattributes
index 0501f9b..143b29d 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -14,6 +14,7 @@ docs/devel/example_singleton.py -text
 docs/devel/example_singleton_pubsub.py -text
 docs/devel/sendmessages.txt -text
 docs/devel/subscribes.txt -text
+docs/user_guide_invesalius3a.odt -text
 docs/user_guide_invesalius3a.pdf -text
 i18n/de.po -text
 i18n/el.po -text
diff --git a/docs/user_guide_invesalius3a.odt b/docs/user_guide_invesalius3a.odt
new file mode 100644
index 0000000..a07f0f8
Binary files /dev/null and b/docs/user_guide_invesalius3a.odt differ
--
libgit2 0.21.2