--- a/testing/mozbase/mozlog/mozlog/pytest_mozlog/plugin.py
+++ b/testing/mozbase/mozlog/mozlog/pytest_mozlog/plugin.py
@@ -77,16 +77,20 @@ class MozLog(object):
         if report.failed:
             status = 'FAIL' if report.when == 'call' else 'ERROR'
         if report.skipped:
             status = 'SKIP' if not hasattr(report, 'wasxfail') else 'FAIL'
         if report.longrepr is not None:
             if isinstance(report.longrepr, basestring):
                 # When using pytest-xdist, longrepr is serialised as a str
                 message = stack = report.longrepr
+                if report.longrepr.startswith('[XPASS(strict)]'):
+                    # Strict expected failures have an outcome of failed when
+                    # they unexpectedly pass.
+                    expected, status = ('FAIL', 'PASS')
             else:
                 try:
                     # For failures, longrepr is a ReprExceptionInfo
                     crash = report.longrepr.reprcrash
                     message = "{0} (line {1})".format(crash.message, crash.lineno)
                     stack = report.longrepr.reprtraceback
                 except AttributeError:
                     # For skips, longrepr is a tuple of (file, lineno, reason)