1 files changed, 2 insertions, 0 deletions
diff --git a/src/Document.h b/src/Document.h
index 3b43852f0..cf5187ae2 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -235,6 +235,8 @@ public:
 	int IndentSize() { return actualIndentInChars; }
 
 private:
+	void CheckReadOnly();
+
 	charClassification WordCharClass(unsigned char ch);
 	bool IsWordStartAt(int pos);
 	bool IsWordEndAt(int pos);