diff --git a/python/mxnet/executor.py b/python/mxnet/executor.py
index 7c7ea5db449e..f57077adc919 100644
--- a/python/mxnet/executor.py
+++ b/python/mxnet/executor.py
@@ -95,5 +95,6 @@ def outputs(self):
         # if user set the content of the head, the backward behavior can be incorrect.
         out_size = mx_uint()
         handles = ctypes.POINTER(NDArrayHandle)()
-        check_call(_LIB.MXExecutorOutputs(self.handle, ctypes.byref(out_size), ctypes.byref(handles)))
+        check_call(_LIB.MXExecutorOutputs(self.handle,
+                                          ctypes.byref(out_size), ctypes.byref(handles)))
         return [NDArray(NDArrayHandle(handles[i])) for i in range(out_size.value)]