diff --git a/oml/item/icons.py b/oml/item/icons.py
index 9423d6b..212af9c 100644
--- a/oml/item/icons.py
+++ b/oml/item/icons.py
@@ -79,7 +79,7 @@ class Icons(dict):
             c.close()
             conn.close()
         except:
-            logger.debug('failed to insert icon %s', id)
+            logger.debug('failed to insert icon %s', id, exc_info=True)
 
     def __delitem__(self, id):
         sql = 'DELETE FROM icon WHERE id = ?'