diff --git a/src/libs/vdxf/libdxfrw/intern/drw_textcodec.h b/src/libs/vdxf/libdxfrw/intern/drw_textcodec.h
index f50ddca65..d727dc97c 100644
--- a/src/libs/vdxf/libdxfrw/intern/drw_textcodec.h
+++ b/src/libs/vdxf/libdxfrw/intern/drw_textcodec.h
@@ -6,6 +6,7 @@
 
 class QTextCodec;
 class QStringList;
+template <class Key, class T> class QMap;
 
 class DRW_TextCodec
 {