diff --git a/components/style/gecko/generated/structs.rs b/components/style/gecko/generated/structs.rs
index 5374f420c7d..38155578238 100644
--- a/components/style/gecko/generated/structs.rs
+++ b/components/style/gecko/generated/structs.rs
@@ -12244,6 +12244,10 @@ pub mod root {
             #[link_name = "\u{1}_ZN7mozilla10StylePrefs28sMozDocumentEnabledInContentE"]
             pub static mut StylePrefs_sMozDocumentEnabledInContent: bool;
         }
+        extern "C" {
+            #[link_name = "\u{1}_ZN7mozilla10StylePrefs28sMozDocumentURLPrefixHackEnabledE"]
+            pub static mut StylePrefs_sMozDocumentURLPrefixHackEnabled: bool;
+        }
         extern "C" {
             #[link_name = "\u{1}_ZN7mozilla10StylePrefs32sGridTemplateSubgridValueEnabledE"]
             pub static mut StylePrefs_sGridTemplateSubgridValueEnabled: bool;