diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 275aaaf17..0c283eeef 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -22,6 +22,7 @@
+ Duplicated "0x" check in createBigInteger in NumberUtils
StringUtils.abbreviate description doesn't agree with the examples
Multiline recursive to string style
Add isSorted() to ArrayUtils
diff --git a/src/main/java/org/apache/commons/lang3/math/NumberUtils.java b/src/main/java/org/apache/commons/lang3/math/NumberUtils.java
index 14f4bf469..21e4079b9 100644
--- a/src/main/java/org/apache/commons/lang3/math/NumberUtils.java
+++ b/src/main/java/org/apache/commons/lang3/math/NumberUtils.java
@@ -734,7 +734,7 @@ public static BigInteger createBigInteger(final String str) {
negate = true;
pos = 1;
}
- if (str.startsWith("0x", pos) || str.startsWith("0x", pos)) { // hex
+ if (str.startsWith("0x", pos) || str.startsWith("0X", pos)) { // hex
radix = 16;
pos += 2;
} else if (str.startsWith("#", pos)) { // alternative hex (allowed by Long/Integer)
diff --git a/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java b/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
index e40293c48..6ca18f1b8 100644
--- a/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
+++ b/src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
@@ -427,6 +427,7 @@ public void testCreateBigInteger() {
// Funky whitespaces
this.testCreateBigIntegerFailure("\u00A0\uFEFF\u000B\u000C\u001C\u001D\u001E\u001F");
assertEquals("createBigInteger(String) failed", new BigInteger("255"), NumberUtils.createBigInteger("0xff"));
+ assertEquals("createBigInteger(String) failed", new BigInteger("255"), NumberUtils.createBigInteger("0Xff"));
assertEquals("createBigInteger(String) failed", new BigInteger("255"), NumberUtils.createBigInteger("#ff"));
assertEquals("createBigInteger(String) failed", new BigInteger("-255"), NumberUtils.createBigInteger("-0xff"));
assertEquals("createBigInteger(String) failed", new BigInteger("255"), NumberUtils.createBigInteger("0377"));