diff --git a/python/tvm/runtime/ndarray.py b/python/tvm/runtime/ndarray.py
index d6902bc62574..300311d03b82 100644
--- a/python/tvm/runtime/ndarray.py
+++ b/python/tvm/runtime/ndarray.py
@@ -176,6 +176,8 @@ def copyfrom(self, source_array):
         if (not source_array.flags["C_CONTIGUOUS"]) or (
             dtype == "bfloat16" or dtype != np_dtype_str
         ):
+            if dtype == "bfloat16":
+                source_array = np.frombuffer(source_array.tobytes(), "uint16")
             source_array = np.ascontiguousarray(
                 source_array, dtype="uint16" if dtype == "bfloat16" else dtype
             )