diff --git a/Libraries/LibWeb/DOM/AttributeNames.cpp b/Libraries/LibWeb/DOM/AttributeNames.cpp
index 59188f0e7e..3dacd5f388 100644
--- a/Libraries/LibWeb/DOM/AttributeNames.cpp
+++ b/Libraries/LibWeb/DOM/AttributeNames.cpp
@@ -35,7 +35,7 @@ FlyString class_;
 
 void initialize()
 {
-    bool s_initialized = false;
+    static bool s_initialized = false;
     if (s_initialized)
         return;
     id = "id";