diff --git a/giant/validate.py b/giant/validate.py
index 44ae071..62a88df 100644
--- a/giant/validate.py
+++ b/giant/validate.py
@@ -215,6 +215,8 @@ def validate_marginals(
     print("-" * 68)
     for j, name in enumerate(_SEC_PHYS_NAMES):
         r, g = phys_real[:, j], phys_gen[:, j]
+        if len(r) == 0 or len(g) == 0:
+            continue
         print(
             f"{name:<20} {r.mean():>10.4f} {g.mean():>10.4f} "
             f"{r.std():>10.4f} {g.std():>10.4f} {phys_kl[j]:>14.4f}"