diff --git a/src/stc/ScintillaWX.h b/src/stc/ScintillaWX.h
index 105343f240..d791fa25e4 100644
--- a/src/stc/ScintillaWX.h
+++ b/src/stc/ScintillaWX.h
@@ -66,6 +66,7 @@
     #define WXDLLIMPEXP_STC
 #endif
 
+class WXDLLIMPEXP_CORE wxDC;
 class WXDLLIMPEXP_STC wxStyledTextCtrl;           // forward
 class ScintillaWX;