diff --git a/src/lib/index.ts b/src/lib/index.ts
index 2577e72..7e7ad9e 100644
--- a/src/lib/index.ts
+++ b/src/lib/index.ts
@@ -433,7 +433,7 @@ export function format(
 		return prelude
 			.replace(/\s*([:,])/g, prelude.toLowerCase().includes('selector(') ? '$1' : '$1 ') // force whitespace after colon or comma, except inside `selector()`
 			.replace(/\)([a-zA-Z])/g, ') $1') // force whitespace between closing parenthesis and following text (usually and|or)
-			.replace(/\s*(=>|<=)\s*/g, ' $1 ') // force whitespace around => and <=
+			.replace(/\s*(=>|>=|<=)\s*/g, `${OPTIONAL_SPACE}$1${OPTIONAL_SPACE}`) // add optional spacing around =>, >= and <=
 			.replace(/([^<>=\s])([<>])([^<>=\s])/g, `$1${OPTIONAL_SPACE}$2${OPTIONAL_SPACE}$3`) // add spacing around < or > except when it's part of <=, >=, =>
 			.replace(/\s+/g, OPTIONAL_SPACE) // collapse multiple whitespaces into one
 			.replace(
diff --git a/test/atrules.test.ts b/test/atrules.test.ts
index ed7379f..20d9ad9 100644
--- a/test/atrules.test.ts
+++ b/test/atrules.test.ts
@@ -114,6 +114,7 @@ test('@media prelude formatting', () => {
 			`@media (min-width: 1024px)or (max-width: 1439px) {}`,
 			`@media (min-width: 1024px) or (max-width: 1439px) {}`,
 		],
+		[`@media (width>=44rem)or (width<=33rem) {}`, `@media (width >= 44rem) or (width <= 33rem) {}`],
 		[
 			`@media all and (transform-3d), (-webkit-transform-3d) {}`,
 			`@media all and (transform-3d), (-webkit-transform-3d) {}`,