diff --git a/Libraries/LibWeb/CSS/Properties.json b/Libraries/LibWeb/CSS/Properties.json
index 28a6302b98d..d5f79efe717 100644
--- a/Libraries/LibWeb/CSS/Properties.json
+++ b/Libraries/LibWeb/CSS/Properties.json
@@ -2848,7 +2848,6 @@
     "inherited": false,
     "initial": "all",
     "valid-types": [
-      "string",
       "custom-ident ![all,none]"
     ],
     "valid-identifiers": [