diff --git a/src/plugins/texteditor/basetextdocument.cpp b/src/plugins/texteditor/basetextdocument.cpp
index fd3c00ceb7f..4243a6f4514 100644
--- a/src/plugins/texteditor/basetextdocument.cpp
+++ b/src/plugins/texteditor/basetextdocument.cpp
@@ -201,9 +201,11 @@ public:
     bool m_fileIsReadOnly;
     bool m_hasDecodingError;
     QByteArray m_decodingErrorSample;
-    static const int kChunkSize = 65536;
+    static const int kChunkSize;
 };
 
+const int BaseTextDocumentPrivate::kChunkSize = 65536;
+
 BaseTextDocumentPrivate::BaseTextDocumentPrivate(BaseTextDocument *q) :
     m_document(new QTextDocument(q)),
     m_documentMarker(new Internal::DocumentMarker(m_document)),