diff --git a/core/fpdfapi/parser/cpdf_boolean.cpp b/core/fpdfapi/parser/cpdf_boolean.cpp
index eb01c06..2633c87 100644
--- a/core/fpdfapi/parser/cpdf_boolean.cpp
+++ b/core/fpdfapi/parser/cpdf_boolean.cpp
@@ -5,6 +5,7 @@
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "core/fpdfapi/parser/cpdf_boolean.h"
+#include "core/fxcrt/fx_stream.h"
 #include "third_party/base/ptr_util.h"
 
 CPDF_Boolean::CPDF_Boolean() : m_bValue(false) {}