diff --git a/pyopencl/array.py b/pyopencl/array.py
index bf8325c23a1f463d8c31f565ec9ef1163268e0f9..999c45442a13f1db2aa0d8ff22d6c438aa26bd72 100644
--- a/pyopencl/array.py
+++ b/pyopencl/array.py
@@ -342,14 +342,18 @@ class Array(object):
     def set(self, ary, queue=None, async=False):
         assert ary.size == self.size
         assert ary.dtype == self.dtype
-        assert self.flags.forc
 
         if not ary.flags.forc:
-            raise RuntimeError(
-                    "cannot set from non-contiguous array")
+            raise RuntimeError("cannot set from non-contiguous array")
 
             ary = ary.copy()
 
+        if ary.strides != self.strides:
+            from warnings import warn
+            warn("Setting array from one with different strides/storage order. "
+                    "This will cease to work in 2013.x.",
+                    stacklevel=2)
+
         if self.size:
             cl.enqueue_copy(queue or self.queue, self.data, ary,
                     is_blocking=not async)