diff --git a/htdocs/core/lib/json.lib.php b/htdocs/core/lib/json.lib.php
index 2ec1532a9a9..8c97bbb348f 100644
--- a/htdocs/core/lib/json.lib.php
+++ b/htdocs/core/lib/json.lib.php
@@ -317,19 +317,19 @@ function utf162utf8($utf16)
 
 	switch(true) {
     	case ((0x7F & $bytes) == $bytes):
-    	   // this case should never be reached, because we are in ASCII range
-    	   // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+			// this case should never be reached, because we are in ASCII range
+			// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
     	return chr($bytes);
 
     	case (0x07FF & $bytes) == $bytes:
-    	   // return a 2-byte UTF-8 character
-    	   // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+			// return a 2-byte UTF-8 character
+			// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
     	return chr(0xC0 | (($bytes >> 6) & 0x1F))
     	. chr(0x80 | ($bytes & 0x3F));
 
     	case (0xFFFF & $bytes) == $bytes:
-    	   // return a 3-byte UTF-8 character
-    	   // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+			// return a 3-byte UTF-8 character
+			// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
     	return chr(0xE0 | (($bytes >> 12) & 0x0F))
     	. chr(0x80 | (($bytes >> 6) & 0x3F))
     	. chr(0x80 | ($bytes & 0x3F));