diff --git a/index.ts b/index.ts
index eebde46..40564d6 100644
--- a/index.ts
+++ b/index.ts
@@ -193,10 +193,10 @@ export function format(css: string, { minify = false, tab_size = undefined }: Fo
 				}
 				case 'Combinator': {
 					// putting spaces around `child.name` (+ > ~ or ' '), unless the combinator is ' '
-					buffer += SPACE
-
-					if (child.name !== ' ') {
-						buffer += child.name + SPACE
+					if (child.name === ' ') {
+						buffer += SPACE
+					} else {
+						buffer += OPTIONAL_SPACE + child.name + OPTIONAL_SPACE
 					}
 					break
 				}
diff --git a/package-lock.json b/package-lock.json
index c235e0a..7b19903 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2550,9 +2550,9 @@
       }
     },
     "node_modules/glob": {
-      "version": "10.4.5",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-10.4.5.tgz",
-      "integrity": "sha512-7Bv8RF0k6xjo7d4A/PxYLbUCfb6c+Vpd2/mB2yRDlew7Jb5hEXiCD9ibfO7wpk8i4sevK6DFny9h7EYbM3/sHg==",
+      "version": "10.5.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-10.5.0.tgz",
+      "integrity": "sha512-DfXN8DfhJ7NH3Oe7cFmu3NCu1wKbkReJ8TorzSAFbSKrlNaQSKfIzqYqVY8zlbs2NLBbWpRiU52GX2PbaBVNkg==",
       "dev": true,
       "license": "ISC",
       "dependencies": {
diff --git a/test/minify.test.ts b/test/minify.test.ts
index f316cb6..295d3b3 100644
--- a/test/minify.test.ts
+++ b/test/minify.test.ts
@@ -85,3 +85,9 @@ test('minifies complex selectors', () => {
 	let expected = `:is(a,b){color:green}`
 	expect(actual).toEqual(expected)
 })
+
+test('removes whitespace around non-whitespace selector combinators', () => {
+	let actual = minify(`a + b {} c d {}`)
+	let expected = `a+b{}c d{}`
+	expect(actual).toEqual(expected)
+})