diff --git a/pyphi/models/actual_causation.py b/pyphi/models/actual_causation.py
index a590c8876..2ac3faad7 100644
--- a/pyphi/models/actual_causation.py
+++ b/pyphi/models/actual_causation.py
@@ -177,7 +177,7 @@ def __eq__(self, other):
         return self.ria == other.ria
 
     def __hash__(self):
-        return hash(('CausalLink', self._ria))
+        return hash(self._ria)
 
     def __bool__(self):
         """An |CausalLink| is ``True`` if |alpha > 0|."""
diff --git a/pyphi/models/cuts.py b/pyphi/models/cuts.py
index af1f5cd8c..e3e8dec74 100644
--- a/pyphi/models/cuts.py
+++ b/pyphi/models/cuts.py
@@ -122,7 +122,7 @@ def __eq__(self, other):
         return self.indices == other.indices
 
     def __hash__(self):
-        return hash(('NullCut', self.indices))
+        return hash(self.indices)
 
 
 class Cut(namedtuple('Cut', ['from_nodes', 'to_nodes']), _CutBase):
diff --git a/pyphi/models/mechanism.py b/pyphi/models/mechanism.py
index cf2a644a0..7efe1d195 100644
--- a/pyphi/models/mechanism.py
+++ b/pyphi/models/mechanism.py
@@ -235,7 +235,7 @@ def __eq__(self, other):
         return self.ria == other.ria
 
     def __hash__(self):
-        return hash(('MICE', self._ria))
+        return hash(self._ria)
 
     def to_json(self):
         return {'ria': self.ria}