diff --git a/doc/src/Section_commands.txt b/doc/src/Section_commands.txt
index 0d46a01424ff0c986e5f9137b995a65ab11cbc3a..4ee0d8b51bd67b872ead28a96d3fca3db57dcdde 100644
--- a/doc/src/Section_commands.txt
+++ b/doc/src/Section_commands.txt
@@ -728,6 +728,7 @@ package"_Section_start.html#start_3.
 "qtb"_fix_qtb.html,
 "reax/c/bonds"_fix_reax_bonds.html,
 "reax/c/species"_fix_reaxc_species.html,
+"rhok"_fix_rhok.html,
 "rx"_fix_rx.html,
 "saed/vtk"_fix_saed_vtk.html,
 "shardlow"_fix_shardlow.html,
diff --git a/doc/src/fixes.txt b/doc/src/fixes.txt
index 7000a66c51dc3df60b1c9701fa77e57c5768fd22..e6aad1c530a758084785a95be7160431cf951081 100644
--- a/doc/src/fixes.txt
+++ b/doc/src/fixes.txt
@@ -124,6 +124,7 @@ Fixes :h1
    fix_reaxc_species
    fix_recenter
    fix_restrain
+   fix_rhok
    fix_rigid
    fix_rx
    fix_saed_vtk
diff --git a/doc/src/lammps.book b/doc/src/lammps.book
index 86dfe78af35b27f8c58ba50da4fd5b280fe1a4c2..9f2e27045248a4f02210b12a876fd294b73db67c 100644
--- a/doc/src/lammps.book
+++ b/doc/src/lammps.book
@@ -253,6 +253,7 @@ fix_reaxc_species.html
 fix_recenter.html
 fix_restrain.html
 fix_rigid.html
+fix_rhok.html
 fix_rx.html
 fix_saed_vtk.html
 fix_setforce.html
diff --git a/src/.gitignore b/src/.gitignore
index 1571065b72e57ce17ef3893a2706230ff2e1038d..504db2cdde2e1fc9d42533f6e44296f6bfa82f3d 100644
--- a/src/.gitignore
+++ b/src/.gitignore
@@ -503,6 +503,8 @@
 /fix_reaxc_bonds.h
 /fix_reaxc_species.cpp
 /fix_reaxc_species.h
+/fix_rhok.cpp
+/fix_rhok.h
 /fix_rigid.cpp
 /fix_rigid.h
 /fix_rigid_nh.cpp