diff --git a/scripts/verify-swift15-ple.py b/scripts/verify-swift15-ple.py
index a74f1c1..ec4f068 100755
--- a/scripts/verify-swift15-ple.py
+++ b/scripts/verify-swift15-ple.py
@@ -48,10 +48,10 @@ for fname, keys in sorted(shards.items()):
         for k in keys:
             meta = header[k]
             off, end = meta["data_offsets"]
-            assert meta["dtype"] == "BF16", f"{k}: dtype {meta['dtype']}"
             a = np.frombuffer(mm, dtype=np.uint16, count=(end - off) // 2,
                               offset=base + off)
             m = int((a & 0x7FFF).max())
+            del a
             if m > gmax:
                 gmax = m
                 gfile = k