diff --git a/tests/JFJochReceiverProcessingTest.cpp b/tests/JFJochReceiverProcessingTest.cpp
index 301ba0a0..79b80591 100644
--- a/tests/JFJochReceiverProcessingTest.cpp
+++ b/tests/JFJochReceiverProcessingTest.cpp
@@ -209,7 +209,7 @@ TEST_CASE("JFJochIntegrationTest_ZMQ_lysozyme_spot_and_index_refinement_tetragon
             .FilePrefix("lyso_test_refinement_tetragonal").JungfrauConvPhotonCnt(false).SetFileWriterFormat(
                     FileWriterFormat::NXmxVDS).OverwriteExistingFiles(true)
             .DetectorDistance_mm(75).BeamY_pxl(1136).BeamX_pxl(1090).IncidentEnergy_keV(12.4)
-            .SetUnitCell(UnitCell{.a = 36.9, .b = 78.95, .c = 78.95, .alpha = 90, .beta = 90, .gamma = 90})
+            .SetUnitCell(UnitCell{.a = 78.95, .b = 78.95, .c = 36.9, .alpha = 90, .beta = 90, .gamma = 90})
             .GeomRefinementAlgorithm(GeomRefinementAlgorithmEnum::BeamCenter)
             .SpaceGroupNumber(96);
     experiment.SampleTemperature_K(123.0).RingCurrent_mA(115);