diff --git a/examples/COUPLE/fortran/README b/examples/COUPLE/fortran/README
index cc2ab19f27..f5a1dd873a 100644
--- a/examples/COUPLE/fortran/README
+++ b/examples/COUPLE/fortran/README
@@ -6,3 +6,6 @@ code that does this.
 
 See the README file in that dir for instructions on how to build a
 Fortran code that uses this wrapper and links to the LAMMPS library.
+
+This legacy wrapper is deprecated and will be removed in a future
+release of LAMMPS. Please use the Fortran 90 module instead.