diff --git a/fpdfsdk/javascript/PublicMethods.cpp b/fpdfsdk/javascript/PublicMethods.cpp
index b5d4f7b..b349537 100644
--- a/fpdfsdk/javascript/PublicMethods.cpp
+++ b/fpdfsdk/javascript/PublicMethods.cpp
@@ -14,7 +14,7 @@
 #include <vector>
 
 #include "core/fpdfdoc/cpdf_interform.h"
-#include "core/fxcrt/fx_ext.h"
+#include "core/fxcrt/fx_extension.h"
 #include "fpdfsdk/cpdfsdk_formfillenvironment.h"
 #include "fpdfsdk/cpdfsdk_interform.h"
 #include "fpdfsdk/javascript/Field.h"