--- librecad-2.0.0.orig/librecad/src/ui/qg_layerwidget.h 
+++ librecad-2.0.0/librecad/src/ui/qg_layerwidget.h 
@@ -69,7 +69,8 @@
     QIcon layerHidden;
     QIcon layerDefreeze;
     QIcon layerFreeze;
-    QIcon helpLayer;
+    QIcon helpLayerOff;
+    QIcon helpLayerOn;
 };
 
 
