diff --git a/src/awkward/operations/ak_to_jaggedtensor.py b/src/awkward/operations/ak_to_jaggedtensor.py
index bc222afc3b..43c7cb1501 100644
--- a/src/awkward/operations/ak_to_jaggedtensor.py
+++ b/src/awkward/operations/ak_to_jaggedtensor.py
@@ -44,6 +44,7 @@ def to_jaggedtensor(
 
 def _impl(array, padded, padding_value, max_lengths, keep_regular):
     try:
+        import fbgemm_gpu
         import torch
     except ImportError as err:
         raise ImportError(