diff --git a/meteor/scripts/compute_difference_map.py b/meteor/scripts/compute_difference_map.py
index d631289..a22858d 100644
--- a/meteor/scripts/compute_difference_map.py
+++ b/meteor/scripts/compute_difference_map.py
@@ -92,7 +92,7 @@ def denoise_diffmap_according_to_mode(
 
         log.info(
             "Optimal TV weight found",
-            weight=metadata.optimal_tv_weight,
+            weight=f"{metadata.optimal_tv_weight:.2e}",
             initial_negentropy=f"{metadata.initial_negentropy:.2e}",
             final_negentropy=f"{metadata.optimal_negentropy:.2e}",
         )
diff --git a/meteor/tv.py b/meteor/tv.py
index 89c954d..a1f7e74 100644
--- a/meteor/tv.py
+++ b/meteor/tv.py
@@ -184,7 +184,7 @@ def negentropy_objective(tv_weight: float) -> float:
     if maximizer.argument_optimum > TV_MAX_WEIGHT_EXPECTED:
         log.warning(
             "TV regularization weight much larger than expected, something probably went wrong",
-            weight=maximizer.argument_optimum,
+            weight=f"{maximizer.argument_optimum:.2f}",
             limit=TV_MAX_WEIGHT_EXPECTED,
         )