diff --git a/tests/conftest.py b/tests/conftest.py
index e4f7f34..51becee 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -25,6 +25,11 @@ def sample_p():
     return load_sample_inputs("sample_p/input.tsv")
 
 
+@fixture
+def sample_p_tricky():
+    return load_sample_inputs("sample_p_tricky/input.tsv")
+
+
 @fixture
 def sample_q():
     return load_sample_inputs("sample_q/input.tsv")
diff --git a/tests/data/sample_p_tricky/input.tsv b/tests/data/sample_p_tricky/input.tsv
new file mode 100644
index 0000000..a937724
--- /dev/null
+++ b/tests/data/sample_p_tricky/input.tsv
@@ -0,0 +1,12 @@
+#H Bostrom Pressure Test Data RbCuCo(CN)6
+0.28246 0.00404 10.79264 9.94964 10.01934 90.0 90.0 90.0
+0.54597 0.00682 10.72611 9.92916 10.01096 90.0 90.0 90.0
+0.82194 0.00772 10.66755 9.90688 10.00328 90.0 90.0 90.0
+1.12088 0.00917 10.60337 9.88151 9.992910 90.0 90.0 90.0
+1.42459 0.01061 10.53919 9.85840 9.983770 90.0 90.0 90.0
+1.80077 0.01318 10.46293 9.82224 9.970770 90.0 90.0 90.0
+2.24237 0.01797 10.37014 9.77598 9.954700 90.0 90.0 90.0
+2.82361 0.02499 10.25861 9.72716 9.938910 90.0 90.0 90.0
+3.5739  0.03621 10.15985 9.66307 9.913310 90.0 90.0 90.0
+4.24775 0.04907 10.07138 9.59475 9.884650 90.0 90.0 90.0
+4.81786 0.06139 10.00112 9.55436 9.851440 90.0 90.0 90.0
diff --git a/tests/test_app.py b/tests/test_app.py
index 6d6963c..280bae7 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -234,6 +234,33 @@ def test_p_no_pc_sample_data(
     assert len(tables) == 7
 
 
+def test_p_tricky_sample_data(
+    client,
+    sample_p_tricky,
+    parser,
+):
+    post_parameters = {
+        "DataType": "Pressure",
+        "EulerianStrain": "True",
+        "FiniteStrain": "True",
+        "DegPolyCap": "",
+        "DegPolyVol": "",
+        "UsePc": "False",
+        "PcVal": "",
+        "data": sample_p_tricky,
+    }
+
+    response = client.post("/output", data=post_parameters)
+    assert response.status_code == 200
+
+    html_response = [d for d in response.response]
+    assert len(html_response) == 1
+
+    soup = parser(html_response[0])
+    tables = soup.find_all("table")
+    assert len(tables) == 7
+
+
 def test_parse_options():
     from PASCal.options import Options, PASCalDataType