diff --git a/pyopencl/array.py b/pyopencl/array.py
index 258cc32d0f70ffef5a52a60129c868492964a15a..8581ffdc9fbe475a10ad0dc2294ce526a21070ae 100644
--- a/pyopencl/array.py
+++ b/pyopencl/array.py
@@ -654,7 +654,8 @@ def to_device(*args, **kwargs):
     """Converts a numpy array to a :class:`Array`."""
 
     def _to_device(queue, ary, allocator=None, async=False):
-        result = Array(queue, ary.shape, ary.dtype, allocator, strides=ary.strides)
+        result = Array(queue, ary.shape, ary.dtype,
+                        allocator=allocator, strides=ary.strides)
         result.set(ary, async=async)
         return result