diff --git a/lib/iris/tests/results/analysis/sqrt.cml b/lib/iris/tests/results/analysis/sqrt.cml
index c6b9b88e9a..f8a1c48fc3 100644
--- a/lib/iris/tests/results/analysis/sqrt.cml
+++ b/lib/iris/tests/results/analysis/sqrt.cml
@@ -39,6 +39,6 @@
       </coord>
     </coords>
     <cellMethods/>
-    <data checksum="0x09ef96ca" dtype="float64" shape="(73, 96)"/>
+    <data dtype="float64" shape="(73, 96)" state="loaded"/>
   </cube>
 </cubes>
diff --git a/lib/iris/tests/test_basic_maths.py b/lib/iris/tests/test_basic_maths.py
index c4d7b51a06..2d045c684f 100644
--- a/lib/iris/tests/test_basic_maths.py
+++ b/lib/iris/tests/test_basic_maths.py
@@ -554,8 +554,8 @@ def test_square_root(self):
 
         e = a ** 0.5
 
-        self.assertArrayEqual(e.data, a.data ** 0.5)
-        self.assertCML(e, ("analysis", "sqrt.cml"))
+        self.assertArrayAllClose(e.data, a.data ** 0.5)
+        self.assertCML(e, ("analysis", "sqrt.cml"), checksum=False)
         self.assertRaises(ValueError, iris.analysis.maths.exponentiate, a, 0.3)
 
     def test_type_error(self):