4 files changed, 4 insertions, 4 deletions
diff --git a/src/CharClassify.cxx b/src/CharClassify.cxx
index 595b0da30..8678e6d64 100644
--- a/src/CharClassify.cxx
+++ b/src/CharClassify.cxx
@@ -44,7 +44,7 @@ void CharClassify::SetCharClasses(const unsigned char *chars, cc newCharClass) {
 	}
 }
 
-int CharClassify::GetCharsOfClass(cc characterClass, unsigned char *buffer) {
+int CharClassify::GetCharsOfClass(cc characterClass, unsigned char *buffer) const {
 	// Get characters belonging to the given char class; return the number
 	// of characters (if the buffer is NULL, don't write to it).
 	int count = 0;
diff --git a/src/CharClassify.h b/src/CharClassify.h
index 5d2734c00..63e8e8be2 100644
--- a/src/CharClassify.h
+++ b/src/CharClassify.h
@@ -19,7 +19,7 @@ public:
 	enum cc { ccSpace, ccNewLine, ccWord, ccPunctuation };
 	void SetDefaultCharClasses(bool includeWordClass);
 	void SetCharClasses(const unsigned char *chars, cc newCharClass);
-	int GetCharsOfClass(cc charClass, unsigned char *buffer);
+	int GetCharsOfClass(cc charClass, unsigned char *buffer) const;
 	cc GetClass(unsigned char ch) const { return static_cast<cc>(charClass[ch]);}
 	bool IsWord(unsigned char ch) const { return static_cast<cc>(charClass[ch]) == ccWord;}
 
diff --git a/src/Document.cxx b/src/Document.cxx
index d96a889bf..f10e40aad 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -1823,7 +1823,7 @@ void Document::SetCharClasses(const unsigned char *chars, CharClassify::cc newCh
     charClass.SetCharClasses(chars, newCharClass);
 }
 
-int Document::GetCharsOfClass(CharClassify::cc characterClass, unsigned char *buffer) {
+int Document::GetCharsOfClass(CharClassify::cc characterClass, unsigned char *buffer) const {
     return charClass.GetCharsOfClass(characterClass, buffer);
 }
 
diff --git a/src/Document.h b/src/Document.h
index d82aa46b5..d31465f62 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -401,7 +401,7 @@ public:
 
 	void SetDefaultCharClasses(bool includeWordClass);
 	void SetCharClasses(const unsigned char *chars, CharClassify::cc newCharClass);
-	int GetCharsOfClass(CharClassify::cc characterClass, unsigned char *buffer);
+	int GetCharsOfClass(CharClassify::cc characterClass, unsigned char *buffer) const;
 	void SCI_METHOD StartStyling(Sci_Position position, char mask);
 	bool SCI_METHOD SetStyleFor(Sci_Position length, char style);
 	bool SCI_METHOD SetStyles(Sci_Position length, const char *styles);