diff --git a/css/css-typed-om/stylevalue-serialization/cssTransformValue.tentative.html b/css/css-typed-om/stylevalue-serialization/cssTransformValue.tentative.html
index 856b9314d852b71..c098868f143cb78 100644
--- a/css/css-typed-om/stylevalue-serialization/cssTransformValue.tentative.html
+++ b/css/css-typed-om/stylevalue-serialization/cssTransformValue.tentative.html
@@ -107,7 +107,7 @@
         new CSSMathProduct(CSS.number(3))
       ),
     ]),
-    cssText: 'translate(calc(1px + 1em), 0px) rotate(calc(90deg + 1turn)) perspective(calc(1px + 1em)) skew(calc(90deg * 2), calc(1turn * 2)) scale3d(calc(1 * 2), calc(1 + 1), calc(3))',
+    cssText: 'translate(calc(1px + 1em), 0px) rotate(calc(90deg + 360deg)) perspective(calc(1px + 1em)) skew(calc(90deg * 2), calc(360deg * 2)) scale3d(calc(1 * 2), calc(1 + 1), calc(3))',
     desc: 'CSSTransformValue containing CSSMathValues'
   },
   {
diff --git a/css/css-typed-om/the-stylepropertymap/properties/resources/testsuite.js b/css/css-typed-om/the-stylepropertymap/properties/resources/testsuite.js
index 9708c5c04fc2510..cecd72ad927cfe2 100644
--- a/css/css-typed-om/the-stylepropertymap/properties/resources/testsuite.js
+++ b/css/css-typed-om/the-stylepropertymap/properties/resources/testsuite.js
@@ -148,8 +148,7 @@ const gTestSyntaxExamples = {
       {
         description: "a calc time",
         input: new CSSMathSum(new CSSUnitValue(0, 's'), new CSSUnitValue(0, 'ms')),
-        // Specified/computed calcs are usually simplified.
-        // FIXME: Test this properly
+        specifiedExpected: new CSSMathSum(new CSSUnitValue(0, 's'), new CSSUnitValue(0, 's')),
         defaultSpecified: (_, result) => assert_is_calc_sum(result),
         defaultComputed: (_, result) => assert_is_unit('s', result)
       }
@@ -311,7 +310,7 @@ function testPropertyValid(propertyName, examples, specified, computed, descript
         'Specified value must be a CSSStyleValue');
 
       if (specified || example.defaultSpecified) {
-        (specified || example.defaultSpecified)(example.input, specifiedResult);
+        (specified || example.defaultSpecified)(example.specifiedExpected || example.input, specifiedResult);
       } else {
         assert_style_value_equals(specifiedResult, example.input,
           `Setting ${example.description} and getting its specified value`);