diff --git a/gguf-py/gguf/quants.py b/gguf-py/gguf/quants.py
index abc621163..a5a78a7bc 100644
--- a/gguf-py/gguf/quants.py
+++ b/gguf-py/gguf/quants.py
@@ -145,7 +145,7 @@ class BF16(__Quant, qtype=GGMLQuantizationType.BF16):
     @classmethod
     # same as ggml_compute_fp32_to_bf16 in ggml-impl.h
     def quantize_blocks(cls, blocks: np.ndarray) -> np.ndarray:
-        n = blocks.view(np.int32)
+        n = blocks.view(np.uint32)
         # force nan to quiet
         n = np.where((n & 0x7fffffff) > 0x7f800000, (n & np.uint32(0xffff0000)) | np.uint32(64 << 16), n)
         # round to nearest even