diff --git a/tests/KNOWN_FAILING_TESTS b/tests/KNOWN_FAILING_TESTS
index e9003bc98..82276b01d 100644
--- a/tests/KNOWN_FAILING_TESTS
+++ b/tests/KNOWN_FAILING_TESTS
@@ -10,6 +10,8 @@
 # Baseline: develop 38fd4a4f6 (CI run 41157648345, x86_64 Linux), after the SMLib eaa998a pin.
 solidcraft-cli::action_matrix::action_matrix_sample 2 baseline actions fail on SMLib: 2 shells (Bad Loop Orient on issue-616-lid-ribs; status 1001 on filleted-shelled-box, shelled again open at an inner wall)
 solidcraft-cli::naming_corpus::corpus_designs_name_alike_every_build_and_fail_where_a_reference_is_gone oracle/83-boundary-loop-thicken does not load: step 8, SMLib thicken status 1001
+solidcraft-engine::cmd::file::tests::each_format_has_an_export_command_of_its_own SMLib meshes a box's planar faces into 124 triangles, not 12 (the STL is 6284 bytes, the test counts 84 + 50 x 12)
+solidcraft-engine::measure_centre_tests::a_fillet_round_a_boss_reports_its_radius SMLib's round at the foot of a boss is not an analytic torus of minor radius 3, so no face of the body is (the test finds none to measure)
 solidcraft-engine::tests::fillet_fit_taper_closes_to_a_point SMLib fillet status 1001 on the taper fit (radius 16 closing to 0)
 solidcraft-engine::tests::shell_tangent_chain_that_opens_every_face_explains_how_to_keep_walls SMLib shell status 1034 on a box with all 12 edges rounded (Ball corners since 5e8c9c1), opened at one face (tangency-labs/smlib#102)
 solidcraft-kernel::blend::corner_tests::a_round_ending_in_an_earlier_round_matches_both_together SMLib fillet status 1001 on the round that ends in the earlier one