diff --git a/content/citing.txt b/content/citing.txt
index 56b53181145e79d4e08e935bfdf040c54c292db2..bdf77534737c28c94c3785e54f3822b660b49aee 100644
--- a/content/citing.txt
+++ b/content/citing.txt
@@ -4,7 +4,7 @@ Citing Kwant
 We provide Kwant as free software under a `BSD license </license.html>`_ as a
 service to the physics community.  If you have used Kwant for work that has
 lead to a scientific publication, please mention the fact that you used it
-explicitly in the text body.  For example you may add:
+explicitly in the text body.  For example, you may add:
 
   *The numerical calculations were performed using the Kwant code.*