Minor: Linux compilation

diff --git a/src/Model/Model_AttributeSelection.h b/src/Model/Model_AttributeSelection.h
index c2a65b535e31cb6f868d62b9b6e16608ff590787..06d0d3102084d12ec3f791d72f62f95809952bbc 100644 (file)
--- a/src/Model/Model_AttributeSelection.h
+++ b/src/Model/Model_AttributeSelection.h
@@ -29,6 +29,7 @@
 #include <TopTools_ListOfShape.hxx>
 
 class Model_AttributeSelectionList;
+class Model_Document;
 
 /**\class Model_AttributeSelection
  * \ingroup DataModel