diff --git a/testpackage/tests/Flowthrough_amr/Flowthrough_amr.cfg b/testpackage/tests/Flowthrough_amr/Flowthrough_amr.cfg
index 61f1c5a9f..4f65c7dae 100644
--- a/testpackage/tests/Flowthrough_amr/Flowthrough_amr.cfg
+++ b/testpackage/tests/Flowthrough_amr/Flowthrough_amr.cfg
@@ -113,3 +113,6 @@ algorithm = RCB
 [bailout]
 velocity_space_wall_block_margin = 0
 
+[vlasovsolver]
+accelerateMaxwellianBoundaries = 1
+