diff --git a/src/batdetect2/postprocess/decoding.py b/src/batdetect2/postprocess/decoding.py
index 499b2de..c1a283c 100644
--- a/src/batdetect2/postprocess/decoding.py
+++ b/src/batdetect2/postprocess/decoding.py
@@ -34,12 +34,12 @@ def convert_detections_to_raw_predictions(
     predictions = []
 
     for score, class_scores, time, freq, dims, feats in zip(
-        detections.scores,
-        detections.class_scores,
-        detections.times,
-        detections.frequencies,
-        detections.sizes,
-        detections.features,
+        detections.scores.cpu().numpy(),
+        detections.class_scores.cpu().numpy(),
+        detections.times.cpu().numpy(),
+        detections.frequencies.cpu().numpy(),
+        detections.sizes.cpu().numpy(),
+        detections.features.cpu().numpy(),
     ):
         highest_scoring_class = targets.class_names[class_scores.argmax()]