diff --git a/src/plugins/diffeditor/diffutils.cpp b/src/plugins/diffeditor/diffutils.cpp
index 0378cb2f226..a5f803b3faf 100644
--- a/src/plugins/diffeditor/diffutils.cpp
+++ b/src/plugins/diffeditor/diffutils.cpp
@@ -25,7 +25,6 @@
 
 #include "diffutils.h"
 
-#include <texteditor/fontsettings.h>
 #include <utils/algorithm.h>
 #include <utils/differ.h>
 
diff --git a/src/plugins/diffeditor/diffutils.h b/src/plugins/diffeditor/diffutils.h
index d4f05af7f7d..16aba82b450 100644
--- a/src/plugins/diffeditor/diffutils.h
+++ b/src/plugins/diffeditor/diffutils.h
@@ -34,8 +34,6 @@ QT_BEGIN_NAMESPACE
 class QFutureInterfaceBase;
 QT_END_NAMESPACE
 
-namespace TextEditor { class FontSettings; }
-
 namespace Utils { class Diff; }
 
 namespace DiffEditor {