diff --git a/src/openmc_plasma_source/tokamak_source.py b/src/openmc_plasma_source/tokamak_source.py
index 09c526c..904d5c0 100644
--- a/src/openmc_plasma_source/tokamak_source.py
+++ b/src/openmc_plasma_source/tokamak_source.py
@@ -70,7 +70,7 @@ def __init__(
         shafranov_factor: float,
         angles: Tuple[float, float] = (0, 2 * np.pi),
         sample_size: int = 1000,
-        sample_seed: int = 1,
+        sample_seed: int = 122807528840384100672342137672332424406,
     ) -> None:
         # Assign attributes
         self.major_radius = major_radius