diff --git a/pmd-core/src/main/java/net/sourceforge/pmd/cpd/XMLRenderer.java b/pmd-core/src/main/java/net/sourceforge/pmd/cpd/XMLRenderer.java
index f426bdce2a..c82eb5f44b 100644
--- a/pmd-core/src/main/java/net/sourceforge/pmd/cpd/XMLRenderer.java
+++ b/pmd-core/src/main/java/net/sourceforge/pmd/cpd/XMLRenderer.java
@@ -77,7 +77,7 @@ public final class XMLRenderer implements Renderer {
             transformer.setOutputProperty(OutputKeys.CDATA_SECTION_ELEMENTS, "codefragment");
             StringWriter writer = new StringWriter();
             transformer.transform(new DOMSource(doc), new StreamResult(writer));
-            return writer.getBuffer().toString();
+            return writer.toString();
         } catch (TransformerException e) {
             throw new IllegalStateException(e);
         }
diff --git a/pmd-core/src/test/java/net/sourceforge/pmd/cpd/CPDCommandLineInterfaceTest.java b/pmd-core/src/test/java/net/sourceforge/pmd/cpd/CPDCommandLineInterfaceTest.java
index 513cf8c1ea..cf282a92da 100644
--- a/pmd-core/src/test/java/net/sourceforge/pmd/cpd/CPDCommandLineInterfaceTest.java
+++ b/pmd-core/src/test/java/net/sourceforge/pmd/cpd/CPDCommandLineInterfaceTest.java
@@ -12,6 +12,8 @@ import org.junit.contrib.java.lang.system.RestoreSystemProperties;
 import org.junit.contrib.java.lang.system.StandardOutputStreamLog;
 import org.junit.rules.TestRule;
 
+import net.sourceforge.pmd.PMD;
+
 public class CPDCommandLineInterfaceTest {
     @Rule
     public final TestRule restoreSystemProperties = new RestoreSystemProperties();
@@ -27,7 +29,6 @@ public class CPDCommandLineInterfaceTest {
                 "--files", "src/test/resources/net/sourceforge/pmd/cpd/files/",
                 "--format", "xml"
         });
-        Assert.assertEquals("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<pmd-cpd/>\n", log.getLog());
+        Assert.assertEquals("<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "\n" + "<pmd-cpd/>" + PMD.EOL, log.getLog());
     }
-
 }
diff --git a/src/site/markdown/overview/changelog.md b/src/site/markdown/overview/changelog.md
index f8068df3e9..946a0eac61 100644
--- a/src/site/markdown/overview/changelog.md
+++ b/src/site/markdown/overview/changelog.md
@@ -24,6 +24,7 @@
     *   [#1480](https://sourceforge.net/p/pmd/bugs/1480/): false positive on public modifier used with inner interface in enum
 *   General
     *   [#1481](https://sourceforge.net/p/pmd/bugs/1481/): no problems found results in blank file instead of empty xml
+    *   [#1499](https://sourceforge.net/p/pmd/bugs/1499/): \[core] CPD test break PMD 5.5.1 build on Windows
 
 **API Changes:**