diff --git a/src/util/dataTypes.js b/src/util/dataTypes.js
index e1db13754e45..9447732938cd 100644
--- a/src/util/dataTypes.js
+++ b/src/util/dataTypes.js
@@ -147,6 +147,8 @@ function normalizeMathOperatorSpacing(value) {
     'repeating-radial-gradient',
     'repeating-linear-gradient',
     'repeating-conic-gradient',
+
+    'anchor-size',
   ]
 
   return value.replace(/(calc|min|max|clamp)\(.+\)/g, (match) => {
diff --git a/tests/normalize-data-types.test.js b/tests/normalize-data-types.test.js
index ba995f43006f..1c302ec28e68 100644
--- a/tests/normalize-data-types.test.js
+++ b/tests/normalize-data-types.test.js
@@ -96,6 +96,9 @@ let table = [
     '[content-start] calc(100% - 1px) [content-end] minmax(1rem,1fr)',
   ],
 
+  // Prevent formatting functions that are not math functions
+  ['w-[calc(anchor-size(width)+8px)]', 'w-[calc(anchor-size(width) + 8px)]'],
+
   // Misc
   ['color(0_0_0/1.0)', 'color(0 0 0/1.0)'],
   ['color(0_0_0_/_1.0)', 'color(0 0 0 / 1.0)'],