diff --git a/examples/wave/wave-eager-mpi.py b/examples/wave/wave-eager-mpi.py
index 4b408bb599c5002a32325f5befd9ab66ab02cee9..98e020df9b12b76ad757676e1ab3850e57aebf2d 100644
--- a/examples/wave/wave-eager-mpi.py
+++ b/examples/wave/wave-eager-mpi.py
@@ -106,7 +106,7 @@ def rk4_step(y, t, h, f):
     return y + h/6*(k1 + 2*k2 + 2*k3 + k4)
 
 
-def bump(discr, actx, t=0):
+def bump(actx, discr, t=0):
     source_center = np.array([0.2, 0.35, 0.1])[:discr.dim]
     source_width = 0.05
     source_omega = 3
@@ -171,7 +171,7 @@ def main():
         raise ValueError("don't have a stable time step guesstimate")
 
     fields = flat_obj_array(
-            bump(discr, actx),
+            bump(actx, discr),
             [discr.zeros(actx) for i in range(discr.dim)]
             )
 
diff --git a/examples/wave/wave-eager.py b/examples/wave/wave-eager.py
index 7450f435798c249f97dd11e03cd59dbd1e95b542..d9d57eacf7a454148279bea5eaf2162d577c2440 100644
--- a/examples/wave/wave-eager.py
+++ b/examples/wave/wave-eager.py
@@ -100,7 +100,7 @@ def rk4_step(y, t, h, f):
     return y + h/6*(k1 + 2*k2 + 2*k3 + k4)
 
 
-def bump(discr, actx, t=0):
+def bump(actx, discr, t=0):
     source_center = np.array([0.2, 0.35, 0.1])[:discr.dim]
     source_width = 0.05
     source_omega = 3
@@ -147,7 +147,7 @@ def main():
     discr = EagerDGDiscretization(actx, mesh, order=order)
 
     fields = flat_obj_array(
-            bump(discr, actx),
+            bump(actx, discr),
             [discr.zeros(actx) for i in range(discr.dim)]
             )