diff --git a/.changeset/smooth-mugs-grin.md b/.changeset/smooth-mugs-grin.md
new file mode 100644
index 0000000000..3302a63012
--- /dev/null
+++ b/.changeset/smooth-mugs-grin.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: make sure CSS is preserved during SSR with bindings
diff --git a/packages/svelte/src/internal/server/index.js b/packages/svelte/src/internal/server/index.js
index 6098b496c5..bf36a595d8 100644
--- a/packages/svelte/src/internal/server/index.js
+++ b/packages/svelte/src/internal/server/index.js
@@ -49,6 +49,7 @@ export function copy_payload({ out, css, head, uid }) {
  */
 export function assign_payload(p1, p2) {
 	p1.out = p2.out;
+	p1.css = p2.css;
 	p1.head = p2.head;
 	p1.uid = p2.uid;
 }