diff --git a/doc/src/Manual.rst b/doc/src/Manual.rst
index a0697e1381..2ec830a0b7 100644
--- a/doc/src/Manual.rst
+++ b/doc/src/Manual.rst
@@ -54,7 +54,6 @@ every LAMMPS command.
    Howto
    Examples
    Tools
-   Modify
    Python_head
    Errors
    Manual_build
@@ -68,6 +67,7 @@ every LAMMPS command.
    :includehidden:
 
    pg_library
+   Modify
    pg_developer
 ..   pg_modify
 ..   pg_base
diff --git a/doc/src/Modify.rst b/doc/src/Modify.rst
index 531fb6b1f3..fa45c4818e 100644
--- a/doc/src/Modify.rst
+++ b/doc/src/Modify.rst
@@ -1,5 +1,5 @@
-Modify & extend LAMMPS
-**********************
+Modifying & extending LAMMPS
+****************************
 
 LAMMPS is designed in a modular fashion so as to be easy to modify and
 extend with new functionality.  In fact, about 95% of its source code