diff --git a/src/java/org/apache/poi/hssf/model/Sheet.java b/src/java/org/apache/poi/hssf/model/Sheet.java
index 1a44d6e57f..705e367b6d 100644
--- a/src/java/org/apache/poi/hssf/model/Sheet.java
+++ b/src/java/org/apache/poi/hssf/model/Sheet.java
@@ -1105,7 +1105,7 @@ public class Sheet implements Model
             log.log(POILogger.DEBUG, "addRow ");
         DimensionsRecord d = ( DimensionsRecord ) records.get(getDimsLoc());
 
-        if (row.getRowNumber() > d.getLastRow())
+        if (row.getRowNumber() >= d.getLastRow())
         {
             d.setLastRow(row.getRowNumber() + 1);
         }