diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index 3525712071..fb2d20f683 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -3153,7 +3153,7 @@ function smilies_init() {
 		':twisted:' => "\xf0\x9f\x98\x88",
 		  ':arrow:' => "\xe2\x9e\xa1",
 		  ':shock:' => "\xf0\x9f\x98\xaf",
-		  ':smile:' => 'simple-smile.png',
+		  ':smile:' => "\xf0\x9f\x99\x82",
 		    ':???:' => "\xf0\x9f\x98\x95",
 		   ':cool:' => "\xf0\x9f\x98\x8e",
 		   ':evil:' => "\xf0\x9f\x91\xbf",
@@ -3167,11 +3167,11 @@ function smilies_init() {
 		    ':eek:' => "\xf0\x9f\x98\xae",
 		    ':lol:' => "\xf0\x9f\x98\x86",
 		    ':mad:' => "\xf0\x9f\x98\xa1",
-		    ':sad:' => 'frownie.png',
+		    ':sad:' => "\xf0\x9f\x99\x81",
 		      '8-)' => "\xf0\x9f\x98\x8e",
 		      '8-O' => "\xf0\x9f\x98\xaf",
-		      ':-(' => 'frownie.png',
-		      ':-)' => 'simple-smile.png',
+		      ':-(' => "\xf0\x9f\x99\x81",
+		      ':-)' => "\xf0\x9f\x99\x82",
 		      ':-?' => "\xf0\x9f\x98\x95",
 		      ':-D' => "\xf0\x9f\x98\x80",
 		      ':-P' => "\xf0\x9f\x98\x9b",
@@ -3182,8 +3182,8 @@ function smilies_init() {
 		// This one transformation breaks regular text with frequency.
 		//     '8)' => "\xf0\x9f\x98\x8e",
 		       '8O' => "\xf0\x9f\x98\xaf",
-		       ':(' => 'frownie.png',
-		       ':)' => 'simple-smile.png',
+		       ':(' => "\xf0\x9f\x99\x81",
+		       ':)' => "\xf0\x9f\x99\x82",
 		       ':?' => "\xf0\x9f\x98\x95",
 		       ':D' => "\xf0\x9f\x98\x80",
 		       ':P' => "\xf0\x9f\x98\x9b",