diff --git a/test/blockstructured/poisson/poisson_tensor.mini b/test/blockstructured/poisson/poisson_tensor.mini
index c2922469f5d631d8647edbee40f04133b5908b8d..2923263610d8260066e2809090b64ce2d10948c9 100644
--- a/test/blockstructured/poisson/poisson_tensor.mini
+++ b/test/blockstructured/poisson/poisson_tensor.mini
@@ -18,7 +18,7 @@ reference = poisson_ref
 extension = vtu
 
 [formcompiler]
-compare_l2errorsquared = 1e-7
+compare_l2errorsquared = 1e-7, 1e-4 | expand dimension
 grid_unstructured = 0, 1 | expand unstructured
 
 [formcompiler.r]