diff --git a/doc/src/Commands_fix.txt b/doc/src/Commands_fix.txt
index e002c117701110fc6dd33e83865386f52d2bae3e..2b6f4a3080f586c1d713a71db61db15b53536fee 100644
--- a/doc/src/Commands_fix.txt
+++ b/doc/src/Commands_fix.txt
@@ -65,6 +65,7 @@ OPT.
 "eos/table/rx (k)"_fix_eos_table_rx.html,
 "evaporate"_fix_evaporate.html,
 "external"_fix_external.html,
+"ffl"_fix_ffl.html,
 "filter/corotate"_fix_filter_corotate.html,
 "flow/gauss"_fix_flow_gauss.html,
 "freeze"_fix_freeze.html,
diff --git a/doc/src/fix_ffl.txt b/doc/src/fix_ffl.txt
index b8e745eddd685a6af411ae1f2e7ec7bb27a04217..8b874fb3b760a991daaf4c7537a740b2f13d21e8 100644
--- a/doc/src/fix_ffl.txt
+++ b/doc/src/fix_ffl.txt
@@ -94,9 +94,9 @@ system's potential energy as part of "thermodynamic
 output"_thermo_style.html.
 
 This fix computes a global scalar which can be accessed by various
-"output commands"_Section_howto.html#howto_15.  The scalar is the
-cumulative energy change due to this fix.  The scalar value
-calculated by this fix is "extensive".
+"output commands"_Howto_output.html.  The scalar is the cumulative
+energy change due to this fix.  The scalar value calculated by this
+fix is "extensive".
 
 [Restrictions:]
 
@@ -105,9 +105,9 @@ In order to perform constant-pressure simulations please use
 "fix npt"_fix_nh.html, to avoid duplicate integration of the
 equations of motion.
 
-This fix is part of the USER-MISC package.  It is only enabled if LAMMPS
-was built with that package.  See the "Making
-LAMMPS"_Section_start.html#start_3 section for more info.
+This fix is part of the USER-MISC package.  It is only enabled if
+LAMMPS was built with that package.  See the "Build
+package"_Build_package.html doc page for more info.
 
 [Related commands:]
 
diff --git a/doc/src/fixes.txt b/doc/src/fixes.txt
index f2f257b1346240f56256dbd4107198f437d30e27..9ab299465b9b0b129ffca7b886a166e27d16b984 100644
--- a/doc/src/fixes.txt
+++ b/doc/src/fixes.txt
@@ -46,6 +46,7 @@ Fixes :h1
    fix_eos_table_rx
    fix_evaporate
    fix_external
+   fix_ffl
    fix_filter_corotate
    fix_flow_gauss
    fix_freeze
diff --git a/doc/src/lammps.book b/doc/src/lammps.book
index 0e5ceae861b5693074de7949f0c9b2393da1a8bd..110ae3876c443f36f0e605bfd4911dd778b062b5 100644
--- a/doc/src/lammps.book
+++ b/doc/src/lammps.book
@@ -266,6 +266,7 @@ fix_eos_table.html
 fix_eos_table_rx.html
 fix_evaporate.html
 fix_external.html
+fix_ffl.html
 fix_filter_corotate.html
 fix_flow_gauss.html
 fix_freeze.html