Index: src/ooxml/java/org/apache/poi/xssf/eventusermodel/XSSFSheetXMLHandler.java
===================================================================
--- src/ooxml/java/org/apache/poi/xssf/eventusermodel/XSSFSheetXMLHandler.java	(revision 1783184)
+++ src/ooxml/java/org/apache/poi/xssf/eventusermodel/XSSFSheetXMLHandler.java	(working copy)
@@ -394,6 +394,7 @@
        } else if ("sheetData".equals(localName)) {
            // Handle any "missing" cells which had comments attached
            checkForEmptyCellComments(EmptyCellCommentsCheckType.END_OF_SHEET_DATA);
+           output.endSheet();
        }
        else if("oddHeader".equals(localName) || "evenHeader".equals(localName) ||
              "firstHeader".equals(localName)) {
@@ -510,5 +511,7 @@
       public void cell(String cellReference, String formattedValue, XSSFComment comment);
       /** A header or footer has been encountered */
       public void headerFooter(String text, boolean isHeader, String tagName);
+      /** Signal that the end of a sheet was been reached */
+      public void endSheet();
    }
 }