diff --git a/tools/changelogger/Formatter.php b/tools/changelogger/Formatter.php
index bc03febef88..d4c86ced11c 100644
--- a/tools/changelogger/Formatter.php
+++ b/tools/changelogger/Formatter.php
@@ -140,15 +140,15 @@ class Formatter extends KeepAChangelogParser {
 			}
 
 			$version         = '';
-			$timestamp       = new DateTime( 'now', new DateTimeZone( 'UTC' ) );
-			$entry_timestamp = new DateTime( 'now', new DateTimeZone( 'UTC' ) );
+			$timestamp       = new \DateTime( 'now', new \DateTimeZone( 'UTC' ) );
+			$entry_timestamp = new \DateTime( 'now', new \DateTimeZone( 'UTC' ) );
 
 			if ( count( $heading ) ) {
 				$version   = $heading[1];
 				$timestamp = $heading[2];
 
 				try {
-					$timestamp = new DateTime( $timestamp, new DateTimeZone( 'UTC' ) );
+					$timestamp = new \DateTime( $timestamp, new \DateTimeZone( 'UTC' ) );
 				} catch ( \Exception $ex ) {
 					throw new \InvalidArgumentException( "Heading has an invalid timestamp: $heading", 0, $ex );
 				}
@@ -239,7 +239,6 @@ class Formatter extends KeepAChangelogParser {
 			$version      = $entry->getVersion();
 			$is_subentry  = preg_match( $this->subentry_pattern, $version, $subentry );
 			$timestamp    = $entry->getTimestamp();
-			error_log(print_r($version, true));
 			$release_link = $this->getReleaseLink( $version );
 
 			if ( $is_subentry ) {