diff --git a/docs/src/whatsnew/latest.rst b/docs/src/whatsnew/latest.rst
index 13a220e172..7cbeb962b2 100644
--- a/docs/src/whatsnew/latest.rst
+++ b/docs/src/whatsnew/latest.rst
@@ -100,8 +100,7 @@ This document explains the changes made to Iris for this release
    lazy data from file. This will also speed up coordinate comparison.
    (:pull:`5610`)
 
-#. `@bouweandela`_ made comparing coordinates, cubes, and arrays to themselves
-   faster. (:pull:`5691`)
+#. `@bouweandela`_ made comparing coordinates and arrays to themselves faster. (:pull:`5691`)
 
 
 🔥 Deprecations
diff --git a/lib/iris/cube.py b/lib/iris/cube.py
index ae18919904..691349f170 100644
--- a/lib/iris/cube.py
+++ b/lib/iris/cube.py
@@ -3826,9 +3826,6 @@ def _deepcopy(self, memo, data=None):
 
     # START OPERATOR OVERLOADS
     def __eq__(self, other):
-        if other is self:
-            return True
-
         result = NotImplemented
 
         if isinstance(other, Cube):