diff --git a/tests/test_BioLogic.py b/tests/test_BioLogic.py
index 77b71bb..a739f5f 100644
--- a/tests/test_BioLogic.py
+++ b/tests/test_BioLogic.py
@@ -106,6 +106,7 @@ def test_parse_BioLogic_date(data, expected):
     # C019P-0ppb-A_C01.mpr stores the date in a different format
     ('C019P-0ppb-A_C01.mpr', '2019-03-14', '2019-03-14'),
     ('Rapp_Error.mpr', '2010-12-02', '2010-12-02'),
+    ('Ewe_Error.mpr', '2021-11-18', '2021-11-19'),
 ])
 def test_MPR_dates(testdata_dir, filename, startdate, enddate):
     """Check that the start and end dates in .mpr files are read correctly."""
diff --git a/tests/testdata/Ewe_Error.mpr b/tests/testdata/Ewe_Error.mpr
new file mode 100644
index 0000000..90b910d
--- /dev/null
+++ b/tests/testdata/Ewe_Error.mpr
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf6db89c692814232ec5e1420450518eff778a8bac638a78f7bc441da2b88f42
+size 4050615
diff --git a/tests/testdata/Ewe_Error.mpr.license b/tests/testdata/Ewe_Error.mpr.license
new file mode 100644
index 0000000..e5a360a
--- /dev/null
+++ b/tests/testdata/Ewe_Error.mpr.license
@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText Danzi Federico
+SPDX-License-Identifier CC-BY-4.0