diff --git a/qctests/EN_stability_check.py b/qctests/EN_stability_check.py
index 4bb2a28..896a8fa 100644
--- a/qctests/EN_stability_check.py
+++ b/qctests/EN_stability_check.py
@@ -31,6 +31,9 @@ def run_qc(p, parameters):
     t = p.t()
     s = p.s()
     P = p.p()
+    if numpy.ma.all(P.mask):
+        P = 0.9806652*p.z()
+    print(P)
 
     # initialize qc as a bunch of falses;
     qc = numpy.zeros(p.n_levels(), dtype=bool)
diff --git a/tests/EN_stability_check_validation.py b/tests/EN_stability_check_validation.py
index 63dbac8..13b21e6 100644
--- a/tests/EN_stability_check_validation.py
+++ b/tests/EN_stability_check_validation.py
@@ -52,6 +52,15 @@ def test_EN_stability_check_padded(self):
         truth = numpy.ma.array([False, True, True, False, False, False, False, False, False], mask=False)
         assert numpy.array_equal(qc, truth), 'failed to flag padded stability example'
 
+    def test_EN_stability_check_no_pressures(self):
+        '''
+        same as above but with pressures inferred from depth
+        '''
+
+        p = util.testingProfile.fakeProfile([13.5, 25.5, 20.4, 13.5, 13.5, 13.5, 13.5, 13.5, 13.5], [8000, 2000, 1000, 8000, 8000, 8000, 8000, 8000, 8000], salinities=[40, 35, 20, 40, 40, 40, 40, 40, 40], uid=8888)
+        qc = qctests.EN_stability_check.test(p, self.parameters)
+        truth = numpy.ma.array([False, True, True, False, False, False, False, False, False], mask=False)
+        assert numpy.array_equal(qc, truth), 'failed to flag padded stability example'
 
     def test_EN_stability_check_unpadded(self):
         '''
@@ -63,3 +72,4 @@ def test_EN_stability_check_unpadded(self):
         qc = qctests.EN_stability_check.test(p, self.parameters)
         truth = numpy.ma.array([True, True, True, True], mask=False)
         assert numpy.array_equal(qc, truth), 'failed to flag unpadded stability example'
+