diff --git a/fpdfsdk/fpdf_doc.cpp b/fpdfsdk/fpdf_doc.cpp
index 78e0f6d..3bed946 100644
--- a/fpdfsdk/fpdf_doc.cpp
+++ b/fpdfsdk/fpdf_doc.cpp
@@ -28,7 +28,7 @@
 #include "fpdfsdk/cpdfsdk_helpers.h"
 #include "public/fpdf_formfill.h"
 #include "third_party/base/check.h"
-#include "third_party/base/stl_util.h"
+#include "third_party/base/containers/contains.h"
 
 namespace {