diff --git a/machine-learning/app/sessions/rknn.py b/machine-learning/app/sessions/rknn.py
index c79e669632..90bea605ca 100644
--- a/machine-learning/app/sessions/rknn.py
+++ b/machine-learning/app/sessions/rknn.py
@@ -66,7 +66,7 @@ class RknnSession:
         input_feed: dict[str, NDArray[np.float32]] | dict[str, NDArray[np.int32]],
         run_options: Any = None,
     ) -> list[NDArray[np.float32]]:
-        input_data: list[NDArray[np.float32]]  = [np.ascontiguousarray(v) for v in input_feed.values()]
+        input_data: list[NDArray[np.float32]] = [np.ascontiguousarray(v) for v in input_feed.values()]
         self.rknnpool.put(input_data)
         outputs: list[NDArray[np.float32]] = self.rknnpool.get()
         return outputs