diff --git a/python/gateway.py b/python/gateway.py
index 7386594..e633245 100644
--- a/python/gateway.py
+++ b/python/gateway.py
@@ -38,7 +38,7 @@ def pointer_to_ndarray(addr, dtype, nitems):
     return numpy.asarray(array_like()).view(dtype.base)

 def pointers_to_ndarrays(addrs, dtypes, nitems):
-    return [pointer_to_ndarray(*args) for args in zip(addrs, dtypes, nitems)]
+    return [pointer_to_ndarray(addrs[i], dtypes[i], nitems[i]) for i in range(len(addrs))]

 ########################################################################
 # Handler that does callbacks from C++