diff --git a/taglib/toolkit/tstring.cpp b/taglib/toolkit/tstring.cpp
index 34481ca7..ad0f7e7b 100644
--- a/taglib/toolkit/tstring.cpp
+++ b/taglib/toolkit/tstring.cpp
@@ -313,7 +313,7 @@ const char *String::toCString(bool unicode) const
 
 const wchar_t *String::toCWString() const
 {
-  return d->data.c_str();
+  return d->data->c_str();
 }
 
 String::Iterator String::begin()