diff --git a/unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSetMethods.java b/unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSetMethods.java
index c6b536b233b60..2d44f08b9e24e 100644
--- a/unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSetMethods.java
+++ b/unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSetMethods.java
@@ -74,7 +74,7 @@ public static boolean anySet(Object baseObject, long baseOffset, long bitSetWidt
     assert bitSetWidthInBytes % WORD_SIZE == 0;
     int widthInLong = (int)(bitSetWidthInBytes / WORD_SIZE);
     long addr = baseOffset;
-    for (int i = 0; i <= widthInLong; i++, addr += WORD_SIZE) {
+    for (int i = 0; i < widthInLong; i++, addr += WORD_SIZE) {
       if (PlatformDependent.UNSAFE.getLong(baseObject, addr) != 0) {
         return true;
       }