diff --git a/spacy/pipeline/span_finder.py b/spacy/pipeline/span_finder.py
index 50112d692..5b6f25262 100644
--- a/spacy/pipeline/span_finder.py
+++ b/spacy/pipeline/span_finder.py
@@ -333,7 +333,7 @@ class SpanFinder(TrainablePipe):
             masks.append(mask)
         truths = ops.xp.concatenate(truths, axis=0)
         masks = ops.xp.concatenate(masks, axis=0)
-        return truths, mask
+        return truths, masks
 
     def _get_reference(self, docs) -> List[Tuple[int, int]]:
         """Create a reference list of token probabilities"""