diff --git a/wp-includes/class-wp.php b/wp-includes/class-wp.php
index c47679fbe4..b1b1e2876e 100644
--- a/wp-includes/class-wp.php
+++ b/wp-includes/class-wp.php
@@ -382,7 +382,7 @@ class WP {
 			@header("{$name}: {$field_value}");
 
 		if ( isset( $headers['Last-Modified'] ) && empty( $headers['Last-Modified'] ) && function_exists( 'header_remove' ) )
-			header_remove( 'Last-Modified' );
+			@header_remove( 'Last-Modified' );
 
 		if ( $exit_required )
 			exit();
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 4a6e0a3b89..a589297edf 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -927,7 +927,7 @@ function nocache_headers() {
 	foreach( $headers as $name => $field_value )
 		@header("{$name}: {$field_value}");
 	if ( empty( $headers['Last-Modified'] ) && function_exists( 'header_remove' ) )
-		header_remove( 'Last-Modified' );
+		@header_remove( 'Last-Modified' );
 }
 
 /**