diff --git a/src/lammps.cpp b/src/lammps.cpp
index 0a289fe006..cecad6e870 100644
--- a/src/lammps.cpp
+++ b/src/lammps.cpp
@@ -566,10 +566,6 @@ LAMMPS::LAMMPS(int narg, char **arg, MPI_Comm communicator) :
       if (!helpflag)
         utils::logmesg(this,"LAMMPS ({}{})\n", version, update_string);
 
-     // warn against using I/O redirection in parallel runs
-      if ((inflag == 0) && (universe->nprocs > 1))
-        error->warning(FLERR, "Using I/O redirection is unreliable with parallel runs. "
-                       "Better to use the -in switch to read input files.");
       utils::flush_buffers(this);
     }