diff --git a/fxjs/BUILD.gn b/fxjs/BUILD.gn
index 1def9e0..0526f21 100644
--- a/fxjs/BUILD.gn
+++ b/fxjs/BUILD.gn
@@ -223,6 +223,7 @@
         "gc/heap.cpp",
         "gc/heap.h",
       ]
+      configs += [ "../:pdfium_core_config" ]
       deps = [
         "../core/fxcrt",
         "//v8:v8_libplatform",