fixup

mrocklin · Feb 17, 2019 · fb6c452 · fb6c452
1 parent e3a5578
commit fb6c452
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/dask/blockwise.py b/dask/blockwise.py
@@ -479,7 +479,7 @@ def _optimize_blockwise(full_graph, keys=()):
                 if layers[dep].concatenate != layers[layer].concatenate:
                     stack.append(dep)
                     continue
-                if sum(k == dep for k, _ in layers[layer].indices) > 1:
+                if sum(k == dep for k, ind in layers[layer].indices if ind is not None) > 1:
                     stack.append(dep)
                     continue