diff --git a/doc/src/compute_ptm_atom.txt b/doc/src/compute_ptm_atom.txt
index 2e22e4e9fb..8f79fe502b 100644
--- a/doc/src/compute_ptm_atom.txt
+++ b/doc/src/compute_ptm_atom.txt
@@ -117,5 +117,5 @@ package"_Build_package.html doc page for more info.
 :line
 
 :link(Larsen)
-[(Larsen)] Larsen, Schmidt, Schiøtz, Modelling Simul Mater Sci Eng, 24, 055007 (2016).
+[(Larsen)] Larsen, Schmidt, Schiotz, Modelling Simul Mater Sci Eng, 24, 055007 (2016).