diff --git a/tests/examples/step-64.diff b/tests/examples/step-64.diff
index 9c1a6c50e0f0..27118b25b4d2 100644
--- a/tests/examples/step-64.diff
+++ b/tests/examples/step-64.diff
@@ -11,6 +11,6 @@
 >     //cg.solve(*system_matrix_dev, solution_dev, system_rhs_dev, preconditioner);
 >     check_solver_within_range(pcout,cg.solve(*system_matrix_dev, solution_dev, system_rhs_dev, preconditioner),
 >                            solver_control.last_step(),
->                              26, 228);
+>                              8, 60);
 > //    pcout << "  Solved in " << solver_control.last_step() << " iterations."
 > //          << std::endl;
diff --git a/tests/examples/step-64.mpirun=2.with_p4est=true.output b/tests/examples/step-64.mpirun=2.with_p4est=true.output
index 61efb2a3a050..cdac4eabca86 100644
--- a/tests/examples/step-64.mpirun=2.with_p4est=true.output
+++ b/tests/examples/step-64.mpirun=2.with_p4est=true.output
@@ -1,24 +1,24 @@
 Cycle 0
    Number of active cells:       8
    Number of degrees of freedom: 343
-Solver stopped within 26 - 228 iterations
+Solver stopped within 8 - 60 iterations
   solution norm: 0.0205439
 
 Cycle 1
    Number of active cells:       64
    Number of degrees of freedom: 2197
-Solver stopped within 26 - 228 iterations
+Solver stopped within 8 - 60 iterations
   solution norm: 0.0205269
 
 Cycle 2
    Number of active cells:       512
    Number of degrees of freedom: 15625
-Solver stopped within 26 - 228 iterations
+Solver stopped within 8 - 60 iterations
   solution norm: 0.0205261
 
 Cycle 3
    Number of active cells:       4096
    Number of degrees of freedom: 117649
-Solver stopped within 26 - 228 iterations
+Solver stopped within 8 - 60 iterations
   solution norm: 0.0205261