diff --git a/.changeset/three-pears-build.md b/.changeset/three-pears-build.md
new file mode 100644
index 0000000000..8a638149a3
--- /dev/null
+++ b/.changeset/three-pears-build.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: ignore comments when reading CSS values
diff --git a/packages/svelte/src/compiler/phases/1-parse/read/style.js b/packages/svelte/src/compiler/phases/1-parse/read/style.js
index 8cb1d54d54..160e5da277 100644
--- a/packages/svelte/src/compiler/phases/1-parse/read/style.js
+++ b/packages/svelte/src/compiler/phases/1-parse/read/style.js
@@ -524,6 +524,21 @@ function read_value(parser) {
 			in_url = true;
 		} else if ((char === ';' || char === '{' || char === '}') && !in_url && !quote_mark) {
 			return value.trim();
+		} else if (
+			char === '/' &&
+			!in_url &&
+			!quote_mark &&
+			parser.template[parser.index + 1] === '*'
+		) {
+			parser.index += 2;
+			while (parser.index < parser.template.length) {
+				if (parser.template[parser.index] === '*' && parser.template[parser.index + 1] === '/') {
+					parser.index += 2;
+					break;
+				}
+				parser.index++;
+			}
+			continue;
 		}
 
 		value += char;
diff --git a/packages/svelte/tests/css/samples/comment-with-apostrophe/expected.css b/packages/svelte/tests/css/samples/comment-with-apostrophe/expected.css
new file mode 100644
index 0000000000..a196d53cc8
--- /dev/null
+++ b/packages/svelte/tests/css/samples/comment-with-apostrophe/expected.css
@@ -0,0 +1,4 @@
+
+	p.svelte-xyz {
+		padding: 0 /* it's a comment */ 1em;
+	}
diff --git a/packages/svelte/tests/css/samples/comment-with-apostrophe/input.svelte b/packages/svelte/tests/css/samples/comment-with-apostrophe/input.svelte
new file mode 100644
index 0000000000..0f9e0d2355
--- /dev/null
+++ b/packages/svelte/tests/css/samples/comment-with-apostrophe/input.svelte
@@ -0,0 +1,7 @@
+<p>red</p>
+
+<style>
+	p {
+		padding: 0 /* it's a comment */ 1em;
+	}
+</style>