diff --git a/doc/fix_atom_swap.html b/doc/fix_atom_swap.html
index cc7f51e535..2a1d517a43 100644
--- a/doc/fix_atom_swap.html
+++ b/doc/fix_atom_swap.html
@@ -197,6 +197,6 @@ LAMMPS</A> section for more info.
 </P>
 <P><B>Default:</B>
 </P>
-<P>The option defaults are ke = yes.
+<P>The option defaults are ke = yes, semi-grand = no.
 </P>
 </HTML>
diff --git a/doc/fix_atom_swap.txt b/doc/fix_atom_swap.txt
index 60f8a54b5b..edc5edbd03 100644
--- a/doc/fix_atom_swap.txt
+++ b/doc/fix_atom_swap.txt
@@ -183,4 +183,4 @@ LAMMPS"_Section_start.html#start_3 section for more info.
 
 [Default:]
 
-The option defaults are ke = yes.
+The option defaults are ke = yes, semi-grand = no.