diff --git a/include/wx/string.h b/include/wx/string.h
index 1fc8abd554..7931a8116e 100644
--- a/include/wx/string.h
+++ b/include/wx/string.h
@@ -772,7 +772,7 @@ public:
 
 // Lightweight object returned by wxString::c_str() and implicitly convertible
 // to either const char* or const wchar_t*.
-class WXDLLIMPEXP_BASE wxCStrData
+class wxCStrData
 {
 private:
     // Ctors; for internal use by wxString and wxCStrData only