diff --git a/modnet/models/ensemble.py b/modnet/models/ensemble.py
index 907909e4..80fa0e65 100644
--- a/modnet/models/ensemble.py
+++ b/modnet/models/ensemble.py
@@ -222,7 +222,7 @@ class OR only return the most probable class.
                 arr=np.array(all_predictions),
             )
 
-        p_std = np.array(all_predictions).std(axis=0)
+        p_std = np.array(all_predictions, dtype=np.float32).std(axis=0)
         df_mean = pd.DataFrame(p_mean, index=p.index, columns=p_columns)
         df_std = pd.DataFrame(p_std, index=p.index, columns=p.columns)