diff --git a/tests/ModelValidationTest.cpp b/tests/ModelValidationTest.cpp
index 47b7ddf73..5bac11561 100644
--- a/tests/ModelValidationTest.cpp
+++ b/tests/ModelValidationTest.cpp
@@ -510,12 +510,14 @@ TEST_CASE("ModelValidation_ReindexesTheDataIntoTheModelsIndexing", "[ModelValida
     CHECK(twin.indexing_op == gemmi::Op::identity());
     CHECK(twin.change_of_basis_op == gemmi::Op::identity());
 
-    // Data already in the model's indexing: nothing moves, and there is nothing to arbitrate.
+    // Data already in the model's indexing: nothing moves. The null is run all the same, as on every
+    // validation that judges its model (ModelValidationSchedule::fit_test), and the model fits.
     const auto same = ValidateAgainstModel(own, cell, model, prefix, logger, p4, true, 1, 1.0);
     REQUIRE(same.ok);
     CHECK(same.change_of_basis_op == gemmi::Op::identity());
     CHECK(same.indexing_op == gemmi::Op::identity());
-    CHECK_FALSE(same.fit_tested);
+    CHECK(same.fit_tested);
+    CHECK(same.model_fits);
     CHECK(same.r_work < 0.15);
 
     for (const char *suffix : {"_2fofc.ccp4", "_fofc.ccp4", "_anom.ccp4", "_maps.mtz"})