1 files changed, 1 insertions, 0 deletions
diff --git a/src/fit.c b/src/fit.c
index 328873c..8ebaeec 100644
--- a/src/fit.c
+++ b/src/fit.c
@@ -5516,6 +5516,7 @@ int main(int argc, char **argv)
             if (fout) {
                 if (first_mctk) fprintf(fout, "    mctk:\n");
                 fprintf(fout, "      -\n");
+                fprintf(fout, "        id: %" PRIu32 "\n", bmctk.idp);
                 fprintf(fout, "        energy: %.2f\n", bmctk.ene);
                 fprintf(fout, "        dirx: %.4f\n", bmctk.drx);
                 fprintf(fout, "        diry: %.4f\n", bmctk.dry);