diff --git a/src/testcases/org/apache/poi/hssf/data/12843-1.xls b/src/testcases/org/apache/poi/hssf/data/12843-1.xls
new file mode 100644
index 000000000..0ef5df426
Binary files /dev/null and b/src/testcases/org/apache/poi/hssf/data/12843-1.xls differ
diff --git a/src/testcases/org/apache/poi/hssf/data/12843-2.xls b/src/testcases/org/apache/poi/hssf/data/12843-2.xls
new file mode 100644
index 000000000..beff64650
Binary files /dev/null and b/src/testcases/org/apache/poi/hssf/data/12843-2.xls differ
diff --git a/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java b/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
index f4a8e8d62..779805423 100644
--- a/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
+++ b/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
@@ -329,6 +329,25 @@ extends TestCase {
         this.assertTrue("Read workbook!" , true);
 
     }
+    /*Double byte strings 
+     File supplied by jubeson*/
+    public void test12843_1() throws java.io.IOException {
+        String filename = System.getProperty("HSSF.testdata.path");
+        filename=filename+"/12843-1.xls";
+        FileInputStream in = new FileInputStream(filename);
+        HSSFWorkbook wb = new HSSFWorkbook(in);
+        this.assertTrue("Read workbook!" , true);
+    }
+    
+    /*Double byte strings 
+     File supplied by Paul Chung*/
+    public void test12843_2() throws java.io.IOException {
+        String filename = System.getProperty("HSSF.testdata.path");
+        filename=filename+"/12843-2.xls";
+        FileInputStream in = new FileInputStream(filename);
+        HSSFWorkbook wb = new HSSFWorkbook(in);
+        this.assertTrue("Read workbook!" , true);
+    }
     
     /** Reference to Name*/
     public void test13224() throws java.io.IOException {