diff --git a/pytests/pytests/unittests/D_only/nonog/lzflux1e2/test_nonog_lzflux1e2.py b/pytests/pytests/unittests/D_only/nonog/lzflux1e2/test_nonog_lzflux1e2.py
index fef6864f..35809c64 100644
--- a/pytests/pytests/unittests/D_only/nonog/lzflux1e2/test_nonog_lzflux1e2.py
+++ b/pytests/pytests/unittests/D_only/nonog/lzflux1e2/test_nonog_lzflux1e2.py
@@ -11,7 +11,7 @@ def perturb_solution(self, file, perturbation=1e-2):
         for var in ['nis', 'ups', 'tes', 'tis', 'ngs', 'tgs', 'phis']:
             bbb[var][...] *= uniform(low=1-perturbation, high=1+perturbation, size = bbb[var].shape)
 
-    def test_reference(self, epsilon=1e-6):
+    def test_reference(self, epsilon=1e-5):
         from h5py import File
         from uedge import bbb, com
         # Supress output