diff --git a/UM/Settings/SettingRelation.py b/UM/Settings/SettingRelation.py
index a574ffd74..2d7182de6 100644
--- a/UM/Settings/SettingRelation.py
+++ b/UM/Settings/SettingRelation.py
@@ -46,7 +46,11 @@ def __init__(self, owner: SettingDefinition, target: SettingDefinition, relation
     def __hash__(self) -> int:
         """Ensure that the SettingRelation is hashable, so it can be used in a set."""
 
-        return hash((self._owner, self._target, self._type, self._role))
+        try:
+            return self._hash
+        except AttributeError:
+            self._hash = hash((self._owner, self._target, self._type, self._role))
+            return self._hash
 
     @property
     def owner(self) -> SettingDefinition: