diff --git a/doc/src/fix_modify.rst b/doc/src/fix_modify.rst
index e0cf3a34c7..33b11a9764 100644
--- a/doc/src/fix_modify.rst
+++ b/doc/src/fix_modify.rst
@@ -12,7 +12,7 @@ Syntax
 
 * fix-ID = ID of the fix to modify
 * one or more keyword/value pairs may be appended
-* keyword =  *bodyforces* or *colname* or *dynamic/dof* or *energy* or *press* or *respa* or *temp* or *virial*
+* keyword =  *bodyforces* or *colname* or *dynamic/dof* or *energy* or *press* or *respa* or *temp* or *virial* or *every*
 
   .. parsed-literal::
 
@@ -29,6 +29,7 @@ Syntax
        *respa* value = *1* to *max respa level* or *0* (for outermost level)
        *temp* value = compute ID that calculates a temperature
        *virial* value = *yes* or *no*
+       *every* arg  = N
 
 Examples
 """"""""
@@ -39,6 +40,7 @@ Examples
    fix_modify 1 energy yes
    fix_modify tether respa 2
    fix_modify ave colname c_thermo_press Pressure colname 1 Temperature
+   fix_modify pair every 10
 
 Description
 """""""""""
diff --git a/doc/src/fix_pair.rst b/doc/src/fix_pair.rst
index abb44718cd..374ac121f0 100644
--- a/doc/src/fix_pair.rst
+++ b/doc/src/fix_pair.rst
@@ -86,8 +86,9 @@ Restart, fix_modify, output, run start/stop, minimize info
 """""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 
 No information about this fix is written to :doc:`binary restart files
-<restart>`.  None of the :doc:`fix_modify <fix_modify>` options are
-relevant to this fix.
+<restart>`.
+The timesteps on which fix pair will extract per-atom quantities from a pair
+style can be modified by *every* option of :doc:`fix_modify <fix_modify>`.
 
 As explained above, this fix produces a per-atom vector or array which
 can be accessed by various :doc:`output commands <Howto_output>`.  If
@@ -103,6 +104,7 @@ Related commands
 """"""""""""""""
 
 :doc:`compute pair <compute_pair>`
+:doc:`fix_modify <fix_modify>`
 
 Default
 """""""