diff --git a/doc/Manual.html b/doc/Manual.html
index 73ed0ae8de..98558dd568 100644
--- a/doc/Manual.html
+++ b/doc/Manual.html
@@ -99,7 +99,7 @@ we can improve the LAMMPS documentation.
 <BR>
   4.9 <A HREF = "Section_howto.html#4_9">SPC water model</A> 
 <BR>
-  4.9 <A HREF = "Section_howto.html#4_10">Coupling LAMMPS to other codes</A> 
+  4.10 <A HREF = "Section_howto.html#4_10">Coupling LAMMPS to other codes</A> 
 <BR></UL>
 <LI><A HREF = "Section_example.html">Example problems</A> 
 
diff --git a/doc/Manual.txt b/doc/Manual.txt
index ca67346915..2606c35138 100644
--- a/doc/Manual.txt
+++ b/doc/Manual.txt
@@ -67,7 +67,7 @@ we can improve the LAMMPS documentation.
   4.7 "TIP3P water model"_4_7 :b
   4.8 "TIP4P water model"_4_8 :b
   4.9 "SPC water model"_4_9 :b
-  4.9 "Coupling LAMMPS to other codes"_4_10 :ule,b
+  4.10 "Coupling LAMMPS to other codes"_4_10 :ule,b
 "Example problems"_Section_example.html :l
 "Performance & scalability"_Section_perf.html :l
 "Additional tools"_Section_tools.html :l