diff --git a/sumpy/tools.py b/sumpy/tools.py
index 211f3130e1295bcbc841ddb1815818b598c3b450..5b4c8c8785af471fc632f579c7058562ef25cbd9 100644
--- a/sumpy/tools.py
+++ b/sumpy/tools.py
@@ -440,7 +440,7 @@ class MatrixBlockIndex(object):
         if isinstance(self.row.indices, cl.array.Array) or \
                 isinstance(self.col.indices, cl.array.Array):
             raise ValueError("CL `Array`s are not supported."
-                             "Use MatrixBlockIndex.get() and then view into matrices.")
+                    "Use MatrixBlockIndex.get() and then view into matrices.")
 
         irow = self.row.indices[self.row.ranges[i]:self.row.ranges[i + 1]]
         icol = self.col.indices[self.col.ranges[i]:self.col.ranges[i + 1]]
diff --git a/test/test_matrixgen.py b/test/test_matrixgen.py
index 33f7e352675a31bc9b53f71b0b334af9d3973350..e90a2c7a71f17a1206412aef115917f3e104c795 100644
--- a/test/test_matrixgen.py
+++ b/test/test_matrixgen.py
@@ -27,9 +27,7 @@ import numpy as np
 import numpy.linalg as la
 
 import pyopencl as cl
-import pyopencl.array
-
-from pytools.obj_array import make_obj_array
+import pyopencl.array  # noqa
 
 from sumpy.tools import vector_to_device
 from sumpy.tools import MatrixBlockIndex