diff --git a/wp-includes/load.php b/wp-includes/load.php
index 55bb6dfac8..0596b0cfb6 100644
--- a/wp-includes/load.php
+++ b/wp-includes/load.php
@@ -258,12 +258,7 @@ function timer_stop( $display = 0, $precision = 3 ) { // if called like timer_st
  */
 function wp_debug_mode() {
 	if ( WP_DEBUG ) {
-		// E_DEPRECATED is a core PHP constant in PHP 5.3. Don't define this yourself.
-		// The two statements are equivalent, just one is for 5.3+ and for less than 5.3.
-		if ( defined( 'E_DEPRECATED' ) )
-			error_reporting( E_ALL & ~E_DEPRECATED & ~E_STRICT );
-		else
-			error_reporting( E_ALL );
+		error_reporting( E_ALL );
 
 		if ( WP_DEBUG_DISPLAY )
 			ini_set( 'display_errors', 1 );