--- a/Source/WebKit/WPEPlatform/wpe/WPESettings.cpp
+++ a/Source/WebKit/WPEPlatform/wpe/WPESettings.cpp
@@ -29,6 +29,7 @@
 #include <glib.h>
 #include <wpe/WPEDisplay.h>
 #include <wtf/HashMap.h>
+#include <wtf/Vector.h>
 #include <wtf/glib/GRefPtr.h>
 #include <wtf/glib/GUniquePtr.h>
 #include <wtf/glib/WTFGType.h>
@@ -88,7 +88,7 @@
         };
 
         // We convert all floating refs to normal as multiple instances share the same static objects.
-        static const std::vector<Setting> defaultSettings = {
+        static const WTF::Vector<Setting> defaultSettings = {
             { WPE_SETTING_FONT_NAME, G_VARIANT_TYPE_STRING, g_variant_ref_sink(g_variant_new_string("Sans 10")) },
             { WPE_SETTING_DARK_MODE, G_VARIANT_TYPE_BOOLEAN, g_variant_ref_sink(g_variant_new_boolean(false)) },
             { WPE_SETTING_REDUCED_MOTION, G_VARIANT_TYPE_BOOLEAN, g_variant_ref_sink(g_variant_new_boolean(false)) },