diff --git a/lib/libdia.def b/lib/libdia.def
index 81d19c6..8d9b5b9 100644
--- a/lib/libdia.def
+++ b/lib/libdia.def
@@ -577,6 +577,7 @@ EXPORTS
  object_substitute
  object_toggle_prop
  object_unconnect
+ object_unconnect_all
 
  orthconn_add_segment
  orthconn_can_add_segment
diff --git a/objects/makefile.msc b/objects/makefile.msc
index 0ac96bf..286d846 100644
--- a/objects/makefile.msc
+++ b/objects/makefile.msc
@@ -2,7 +2,7 @@
 
 PLUGINS = aadl chronogram custom er flowchart fs grafcet \
 	Istar Jackson Kaos misc network sadt standard uml \
-	Database custom_lines
+	Database Sozi custom_lines
 
 #outdated:	labels
 
@@ -115,6 +115,16 @@ OBJECTS = \
 PKG_LINK = $(PKG_LINK) 
 !ENDIF
 
+!IFDEF OBJ_Sozi
+OBJECTS = \
+	sozi.obj \
+	sozi-frame.obj \
+	sozi-media.obj \
+	sozi-object.obj
+PKG_LINK = $(PKG_LINK) $(LIBXML2_LIBS) \
+	$(GTK2_LIBS)
+!ENDIF
+
 !IFDEF OBJ_eml
 OBJECTS = \
 	dbox.obj \