diff --git a/src/lib/tvgArray.h b/src/lib/tvgArray.h
index 8d67753a..65a40a0c 100644
--- a/src/lib/tvgArray.h
+++ b/src/lib/tvgArray.h
@@ -73,6 +73,11 @@ struct Array
         return data + count;
     }
 
+    T* last()
+    {
+        return data + count - 1;
+    }
+
     void pop()
     {
         if (count > 0) --count;
diff --git a/src/savers/tvg/tvgTvgSaver.cpp b/src/savers/tvg/tvgTvgSaver.cpp
index 1f28937a..e52fcf44 100644
--- a/src/savers/tvg/tvgTvgSaver.cpp
+++ b/src/savers/tvg/tvgTvgSaver.cpp
@@ -674,7 +674,7 @@ TvgBinCounter TvgSaver::serializeChildren(Iterator* it, const Matrix* pTransform
     while (auto child = it->next()) {
         if (child->identifier() == TVG_CLASS_ID_SHAPE) {
             //only dosable if the previous child is a shape.
-            auto target = children.ptr() - 1;
+            auto target = children.last();
             if ((*target)->identifier() == TVG_CLASS_ID_SHAPE) {
                 if (_merge((Shape*)child, (Shape*)*target)) {
                     continue;