diff --git a/python/src/ops.cpp b/python/src/ops.cpp
index 7b585af6e..74909e81d 100644
--- a/python/src/ops.cpp
+++ b/python/src/ops.cpp
@@ -4271,7 +4271,7 @@ void init_ops(nb::module_& m) {
       nb::kw_only(),
       "stream"_a = nb::none(),
       nb::sig(
-          "def dequantize(w: array, /, scales: array, biases: Optional[array] = = None, group_size: int = 64, bits: int = 4, mode: str = 'affine', *, stream: Union[None, Stream, Device] = None) -> array"),
+          "def dequantize(w: array, /, scales: array, biases: Optional[array] = None, group_size: int = 64, bits: int = 4, mode: str = 'affine', *, stream: Union[None, Stream, Device] = None) -> array"),
       R"pbdoc(
         Dequantize the matrix ``w`` using quantization parameters.