diff --git a/src/Mod/Arch/ArchComponent.py b/src/Mod/Arch/ArchComponent.py
index b2a0f5ddc..c2ab24abf 100644
--- a/src/Mod/Arch/ArchComponent.py
+++ b/src/Mod/Arch/ArchComponent.py
@@ -577,12 +577,13 @@ class Component:
                         base = base.fuse(add)
 
                     elif (Draft.getType(o) == "Window") or (Draft.isClone(o,"Window",True)):
-                        f = o.Proxy.getSubVolume(o)
-                        if f:
-                            if base.Solids and f.Solids:
-                                if placement:
-                                    f.Placement = f.Placement.multiply(placement)
-                                base = base.cut(f)
+                        if hasattr(o.Proxy,"getSubVolume"):
+                            f = o.Proxy.getSubVolume(o)
+                            if f:
+                                if base.Solids and f.Solids:
+                                    if placement:
+                                        f.Placement = f.Placement.multiply(placement)
+                                    base = base.cut(f)
 
                     elif o.isDerivedFrom("Part::Feature"):
                         if o.Shape:
diff --git a/src/Mod/Arch/Resources/ui/preferences-ifc.ui b/src/Mod/Arch/Resources/ui/preferences-ifc.ui
index ab7f177d0..951b273da 100644
--- a/src/Mod/Arch/Resources/ui/preferences-ifc.ui
+++ b/src/Mod/Arch/Resources/ui/preferences-ifc.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>456</width>
-    <height>478</height>
+    <height>486</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -255,6 +255,26 @@
         </item>
        </layout>
       </item>
+      <item>
+       <layout class="QHBoxLayout" name="horizontalLayout_10">
+        <item>
+         <widget class="Gui::PrefCheckBox" name="checkBox_6">
+          <property name="text">
+           <string>Create clones when objects have shared geometry</string>
+          </property>
+          <property name="checked">
+           <bool>true</bool>
+          </property>
+          <property name="prefEntry" stdset="0">
+           <cstring>ifcCreateClones</cstring>
+          </property>
+          <property name="prefPath" stdset="0">
+           <cstring>Mod/Arch</cstring>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout_13">
         <item>
diff --git a/src/Mod/Arch/importIFC.py b/src/Mod/Arch/importIFC.py
index d7c1be6b3..99f73605b 100644
--- a/src/Mod/Arch/importIFC.py
+++ b/src/Mod/Arch/importIFC.py
@@ -304,6 +304,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
         GET_EXTRUSIONS = False
     if not SEPARATE_OPENINGS:
         SKIP.append("IfcOpeningElement")
+    CREATE_CLONES = p.GetBool("ifcCreateClones",True)
 
     try:
         import ifcopenshell
@@ -451,7 +452,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
             prepr = product.Representation
         except:
             if DEBUG: print " ERROR unable to get object representation",
-        if prepr and (MERGE_MODE_ARCH == 0) and archobj:
+        if prepr and (MERGE_MODE_ARCH == 0) and archobj and CREATE_CLONES:
             for s in prepr.Representations:
                 if s.RepresentationIdentifier.upper() == "BODY":
                     if s.Items[0].is_a("IfcMappedItem"):