diff --git a/llmfoundry/callbacks/eval_gauntlet_callback.py b/llmfoundry/callbacks/eval_gauntlet_callback.py
index 4c2bcfe297..7544d66040 100644
--- a/llmfoundry/callbacks/eval_gauntlet_callback.py
+++ b/llmfoundry/callbacks/eval_gauntlet_callback.py
@@ -117,8 +117,7 @@ def __init__(self,
                 elif self.weighting == Weighting.SAMPLE_SZ:
                     weight = cumulative_samples
                 elif self.weighting == Weighting.LOG_SAMPLE_SZ:
-                    weight = max(math.log(cumulative_samples, 2), 1)
-
+                    weight = max(math.log2(cumulative_samples), 1)
                 assert weight is not None
                 benchmark['weighting'] = weight