diff --git a/src/java/org/apache/poi/hssf/record/LbsDataSubRecord.java b/src/java/org/apache/poi/hssf/record/LbsDataSubRecord.java
index e2f7e045a8..1c17f48f4f 100644
--- a/src/java/org/apache/poi/hssf/record/LbsDataSubRecord.java
+++ b/src/java/org/apache/poi/hssf/record/LbsDataSubRecord.java
@@ -165,7 +165,7 @@ public class LbsDataSubRecord extends SubRecord {
 
         // From [MS-XLS].pdf 2.5.147 FtLbsData:
         // This array MUST exist if and only if the wListType field is not equal to 0.
-        if(((_flags >> 4) & 0x2) != 0) {
+        if(((_flags >> 4) & 0x1) + (_flags >> 5 & 0x1) != 0) {
             _bsels = new boolean[_cLines];
             for(int i=0; i < _cLines; i++) {
                 _bsels[i] = in.readByte() == 1;
diff --git a/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java b/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
index 9bcde6ed37..cd2bfe32bc 100644
--- a/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
+++ b/src/testcases/org/apache/poi/hssf/usermodel/TestBugs.java
@@ -2891,7 +2891,10 @@ public final class TestBugs extends BaseTestBugzillaIssues {
     public void test63940() throws IOException {
         simpleTest("SUBSTITUTE.xls");
     }
-
+    @Test
+    public void test64261() throws IOException {
+        simpleTest("64261.xls");
+    }
     // a simple test which rewrites the file once and evaluates its formulas
     private void simpleTest(String fileName) throws IOException {
         simpleTest(fileName, null);
@@ -2932,4 +2935,6 @@ public final class TestBugs extends BaseTestBugzillaIssues {
         HSSFFormulaEvaluator.setupEnvironment( files.toArray(new String[0]), evals.toArray(new HSSFFormulaEvaluator[0]) );
         evals.get(0).evaluateAll();
     }
+
+
 }
diff --git a/test-data/spreadsheet/64261.xls b/test-data/spreadsheet/64261.xls
new file mode 100644
index 0000000000..83d9465476
Binary files /dev/null and b/test-data/spreadsheet/64261.xls differ