diff --git a/app/xml_cdr/resources/classes/xml_cdr.php b/app/xml_cdr/resources/classes/xml_cdr.php
index 1f747ba543..fc2a92471a 100644
--- a/app/xml_cdr/resources/classes/xml_cdr.php
+++ b/app/xml_cdr/resources/classes/xml_cdr.php
@@ -349,13 +349,16 @@
 				$xml_string = preg_replace('/<\/?\d+>/', '', $xml_string);
 
 			//replace xml tag name <set api_hangup_hook> with <api_hangup_hook>
-				$xml_string = preg_replace('/(<\/?)(set )([^>]*>)/', '$1$3', $xml_string);
+				$xml_string = preg_replace('/(<\/?)(set )([^>]*>)/i', '$1$3', $xml_string);
 
 			//replace xml tag name <^^,default_language> with <default_language>
 				$xml_string = preg_replace('/(<\/?)(\^\^,)([^>]*>)/', '$1$3', $xml_string);
 
 			//replace xml tag name <nolocal:operator> with <operator>
-				$xml_string = preg_replace('/(<\/?)(nolocal:)([^>]*>)/', '$1$3', $xml_string);
+				$xml_string = preg_replace('/(<\/?)(nolocal:)([^>]*>)/i', '$1$3', $xml_string);
+
+			//remove spaces in the beginning of the xml open and closing tags
+				$xml_string = preg_replace('/(<\/?)\s*([\w:-]+)/', '$1$2', $xml_string);
 
 			//disable xml entities
 				if (PHP_VERSION_ID < 80000) { libxml_disable_entity_loader(true); }