diff --git a/src/gtk/aboutdlg.cpp b/src/gtk/aboutdlg.cpp
index 16fb5d14fa..9c00eb3f57 100644
--- a/src/gtk/aboutdlg.cpp
+++ b/src/gtk/aboutdlg.cpp
@@ -37,7 +37,7 @@ class GtkStr : public wxGtkString
 {
 public:
     GtkStr(const wxString& s)
-        : wxGtkString(wx_const_cast(char *, wxGTK_CONV_SYS(s).data()))
+        : wxGtkString(wx_const_cast(char *, wxGTK_CONV_SYS(s).release()))
     {
     }
 };