diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd415b6..c6ee2c9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+### Fixed
+- headers error from new line in Server Timing
+
 ## 3.0.1 - 2019-01-09
 
 ### Fixed
diff --git a/src/Manager/Server_Timing_Manager.php b/src/Manager/Server_Timing_Manager.php
index 8c4db47..a936c1e 100644
--- a/src/Manager/Server_Timing_Manager.php
+++ b/src/Manager/Server_Timing_Manager.php
@@ -64,7 +64,7 @@ class Server_Timing_Manager {
 			$header .= sprintf( '%s;dur=%.2f;desc="%s", ', $record->get_category(), $duration, $record->get_name() );
 		}
 
-		header( 'Server-Timing: ' . $header );
+		header( 'Server-Timing: ' . preg_replace( '/\R/', '', $header ) );
 
 		return $input;
 	}