diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index a9e43f9d1d7..a80143de19c 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,14 @@
+2018-09-23  Frederic Wang  <fwang@igalia.com>
+
+        Add missing includes in TextCodecReplacement.cpp
+        https://bugs.webkit.org/show_bug.cgi?id=189894
+
+        Reviewed by NOBODY (OOPS!).
+
+        No new tests, behavior unchanged.
+
+        * platform/text/TextCodecReplacement.cpp: Add missing headers.
+
 2018-09-20  Justin Michaud  <justin_michaud@apple.com>
 
         Implement CSS Custom Properties and Values Skeleton
diff --git a/Source/WebCore/platform/text/TextCodecReplacement.cpp b/Source/WebCore/platform/text/TextCodecReplacement.cpp
index ba2614ca148..1765bf79215 100644
--- a/Source/WebCore/platform/text/TextCodecReplacement.cpp
+++ b/Source/WebCore/platform/text/TextCodecReplacement.cpp
@@ -26,6 +26,8 @@
 #include "config.h"
 #include "TextCodecReplacement.h"
 
+#include <wtf/Function.h>
+#include <wtf/text/WTFString.h>
 #include <wtf/unicode/CharacterNames.h>
 
 namespace WebCore {