diff --git a/src/xercesc/dom/impl/DOMLSSerializerImpl.cpp b/src/xercesc/dom/impl/DOMLSSerializerImpl.cpp
index 6524febb818fe39ebcc42849494968cd0eec83cd..d09c44d2a8c401b2650a7bf82d20bf054b0470a5 100644
--- a/src/xercesc/dom/impl/DOMLSSerializerImpl.cpp
+++ b/src/xercesc/dom/impl/DOMLSSerializerImpl.cpp
@@ -1742,15 +1742,15 @@ bool DOMLSSerializerImpl::isNamespaceBindingActive(const XMLCh* prefix, const XM
 void DOMLSSerializerImpl::ensureValidString(const DOMNode* nodeToWrite, const XMLCh* string)
 {
     // XERCESC-1854: prevent illegal characters from being written
-	if(string==0)
-		return;
-	const XMLCh* cursor=string;
-	while(*cursor!=0)
-	{
+    if(string==0)
+        return;
+    const XMLCh* cursor=string;
+    while(*cursor!=0)
+    {
         if((fIsXml11 && !XMLChar1_1::isXMLChar(*cursor)) || (!fIsXml11 && !XMLChar1_0::isXMLChar(*cursor)))
             reportError(nodeToWrite, DOMError::DOM_SEVERITY_FATAL_ERROR, XMLDOMMsg::INVALID_CHARACTER_ERR);
-		cursor++;
-	}
+        cursor++;
+    }
 }
 
 XERCES_CPP_NAMESPACE_END