diff --git a/src/EXTRA-DUMP/dump_yaml.cpp b/src/EXTRA-DUMP/dump_yaml.cpp
index d6bf27885d..d4f3208ffb 100644
--- a/src/EXTRA-DUMP/dump_yaml.cpp
+++ b/src/EXTRA-DUMP/dump_yaml.cpp
@@ -77,7 +77,7 @@ void DumpYAML::write_header(bigint ndump)
 
   if (comm->me == 0) {
     const std::string boundary(boundstr);
-    fmt::print(fp, "---\ntimestep: {}\n", update->ntimestep);
+    fmt::print(fp, "---\ncreator: LAMMPS\ntimestep: {}\n", update->ntimestep);
     if (unit_flag) fmt::print(fp, "units: {}\n", update->unit_style);
     if (time_flag) fmt::print(fp, "time: {:.16g}\n", compute_time());