diff --git a/examples/wave/wave-op-mpi.py b/examples/wave/wave-op-mpi.py
index b6806b9d3375c4a2319366643bf9de431cf6c5e1..1a622eab37312e0645432b0b5e9c4ebd5a3ee45f 100644
--- a/examples/wave/wave-op-mpi.py
+++ b/examples/wave/wave-op-mpi.py
@@ -195,7 +195,7 @@ def main():
         t += dt
         istep += 1
 
-        assert op.norm(dcoll, fields[0], 2) < 1
+        assert op.norm(dcoll, fields[0], 2) < 10
 
 
 if __name__ == "__main__":
diff --git a/examples/wave/wave-op-var-velocity.py b/examples/wave/wave-op-var-velocity.py
index 77b9daf6aa870b810766394480b0c6f8fe8c6ec8..9e24684856be006866c88f0e7254680747af9e51 100644
--- a/examples/wave/wave-op-var-velocity.py
+++ b/examples/wave/wave-op-var-velocity.py
@@ -201,7 +201,7 @@ def main():
         t += dt
         istep += 1
 
-        assert op.norm(dcoll, fields[0], 2) < 1
+        assert op.norm(dcoll, fields[0], 2) < 10
 
 
 if __name__ == "__main__":
diff --git a/examples/wave/wave-op.py b/examples/wave/wave-op.py
index f8ef5785bb88b7b1b31adc0e4f81a4938d2187f7..2c9fa69c5e1f8bd4a3015d72075f89746e76706e 100644
--- a/examples/wave/wave-op.py
+++ b/examples/wave/wave-op.py
@@ -168,7 +168,7 @@ def main():
         t += dt
         istep += 1
 
-        assert op.norm(dcoll, fields[0], 2) < 1
+        assert op.norm(dcoll, fields[0], 2) < 10
 
 
 if __name__ == "__main__":
diff --git a/grudge/op.py b/grudge/op.py
index c38b9bc106e6b5043623caaefd7ea79580db986b..04082d16e7cc71f2d3e820728b7f800fe3246e7a 100644
--- a/grudge/op.py
+++ b/grudge/op.py
@@ -70,7 +70,6 @@ from meshmode.mesh import BTAG_ALL, BTAG_NONE, BTAG_PARTITION  # noqa
 from meshmode.dof_array import freeze, flatten, unflatten
 
 from grudge.symbolic.primitives import TracePair
-from grudge import sym, bind
 
 
 # {{{ tags