diff --git a/include/wx/fdrepdlg.h b/include/wx/fdrepdlg.h
index cbca13b294..90f0adb8d9 100644
--- a/include/wx/fdrepdlg.h
+++ b/include/wx/fdrepdlg.h
@@ -67,8 +67,8 @@ public:
     wxFindReplaceData(wxUint32 flags) { Init(); SetFlags(flags); }
 
     // accessors
-    const wxString& GetFindString() { return m_FindWhat; }
-    const wxString& GetReplaceString() { return m_ReplaceWith; }
+    const wxString& GetFindString() const { return m_FindWhat; }
+    const wxString& GetReplaceString() const { return m_ReplaceWith; }
 
     int GetFlags() const { return m_Flags; }
 
diff --git a/interface/wx/fdrepdlg.h b/interface/wx/fdrepdlg.h
index ca61b13e16..fa9d16c4ac 100644
--- a/interface/wx/fdrepdlg.h
+++ b/interface/wx/fdrepdlg.h
@@ -130,7 +130,7 @@ public:
     /**
         Get the string to find.
     */
-    const wxString& GetFindString();
+    const wxString& GetFindString() const;
 
     /**
         Get the combination of @c wxFindReplaceFlags values.
@@ -140,7 +140,7 @@ public:
     /**
         Get the replacement string.
     */
-    const wxString& GetReplaceString();
+    const wxString& GetReplaceString() const;
 
     /**
         Set the string to find (used as initial value by the dialog).