diff --git a/openmc/mixin.py b/openmc/mixin.py
index d144492399..dc2e91f51a 100644
--- a/openmc/mixin.py
+++ b/openmc/mixin.py
@@ -7,8 +7,8 @@ import openmc.checkvalue as cv
 
 
 class EqualityMixin:
-    """A Class which provides generic __eq__ and __ne__ functionality which
-    can easily be inherited by downstream classes.
+    """A Class which provides a generic __eq__ method that can be inherited
+    by downstream classes.
     """
 
     def __eq__(self, other):
diff --git a/openmc/trigger.py b/openmc/trigger.py
index 1543d1ada7..fa0ffbbb27 100644
--- a/openmc/trigger.py
+++ b/openmc/trigger.py
@@ -3,9 +3,10 @@ from xml.etree import ElementTree as ET
 from collections.abc import Iterable
 
 import openmc.checkvalue as cv
+from openmc.mixin import EqualityMixin
 
 
-class Trigger:
+class Trigger(EqualityMixin):
     """A criterion for when to finish a simulation based on tally uncertainties.
 
     Parameters
@@ -33,14 +34,11 @@ class Trigger:
         self.threshold = threshold
         self._scores = []
 
-    def __eq__(self, other):
-        return str(self) == str(other)
-
     def __repr__(self):
         string = 'Trigger\n'
-        string += '{0: <16}{1}{2}\n'.format('\tType', '=\t', self._trigger_type)
-        string += '{0: <16}{1}{2}\n'.format('\tThreshold', '=\t', self._threshold)
-        string += '{0: <16}{1}{2}\n'.format('\tScores', '=\t', self._scores)
+        string += '{: <16}=\t{}\n'.format('\tType', self._trigger_type)
+        string += '{: <16}=\t{}\n'.format('\tThreshold', self._threshold)
+        string += '{: <16}=\t{}\n'.format('\tScores', self._scores)
         return string
 
     @property