diff --git a/oox/source/export/shapes.cxx b/oox/source/export/shapes.cxx
index efde8de56f72..fc702c1c3a22 100644
--- a/oox/source/export/shapes.cxx
+++ b/oox/source/export/shapes.cxx
@@ -1675,7 +1675,8 @@ static sal_Int32 lcl_GetGluePointId(const Reference<XShape>& xShape, sal_Int32 n
         bool bFlipH = false;
         bool bFlipV = false;
         Reference<XPropertySet> xShapeProps(xShape, UNO_QUERY);
-        if (xShapeProps->getPropertySetInfo()->hasPropertyByName("CustomShapeGeometry"))
+        if (xShapeProps.is() && xShapeProps->getPropertySetInfo()
+                && xShapeProps->getPropertySetInfo()->hasPropertyByName("CustomShapeGeometry"))
         {
             Sequence<PropertyValue> aGeometrySeq;
             xShapeProps->getPropertyValue("CustomShapeGeometry") >>= aGeometrySeq;