diff --git a/en.markdown b/en.markdown
index 7f66b98..d5b88a0 100644
--- a/en.markdown
+++ b/en.markdown
@@ -39,7 +39,7 @@ to the Keller-Segel model.
 
 | Authors | Title | Links |
 | - | - | :-: |
-{% for pub in site.data.submitted %} | {{pub.authors}} | *{{pub.title}}* | [arXiv](http://arxiv.org/abs/{{pub.arxiv}}) |
+{% for pub in site.data.submitted %} | {{pub.authors}} | *{{pub.title}}* | {% if pub.arxiv %}[arXiv](http://arxiv.org/abs/{{pub.arxiv}}){% endif %} |
 {% endfor %}{: .publi_table}
 
 ### In preparation
diff --git a/index.markdown b/index.markdown
index 7332e7c..8410bca 100644
--- a/index.markdown
+++ b/index.markdown
@@ -37,7 +37,7 @@ ainsi que leurs liens avec certaines inégalités fonctionnelles.
 
 | Auteurs | Titre | Liens |
 | - | - | :-: |
-{% for pub in site.data.submitted %} | {{pub.authors}} | *{{pub.title}}* | [arXiv](http://arxiv.org/abs/{{pub.arxiv}}) |
+{% for pub in site.data.submitted %} | {{pub.authors}} | *{{pub.title}}* | {% if pub.arxiv %}[arXiv](http://arxiv.org/abs/{{pub.arxiv}}){% endif %} |
 {% endfor %}{: .publi_table}
 
 ### En préparation