diff --git a/.changeset/metal-insects-flow.md b/.changeset/metal-insects-flow.md
new file mode 100644
index 0000000000..79b8836259
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+++ b/.changeset/metal-insects-flow.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: restore ClassDirective check for compound class selectors in CSS pruning