diff --git a/src/euphorie/content/browser/similar_titles_details.py b/src/euphorie/content/browser/similar_titles_details.py
index cab56dc3a..763ae48e9 100644
--- a/src/euphorie/content/browser/similar_titles_details.py
+++ b/src/euphorie/content/browser/similar_titles_details.py
@@ -65,7 +65,7 @@ def write_data(self, data, writer):
 
     def __call__(self):
         buffer = StringIO()
-        writer = csv.writer(buffer)
+        writer = csv.writer(buffer, delimiter=";")
 
         self.write_data(self.solutions_by_risk(), writer)