diff --git a/lib/ace/mode/php_highlight_rules.js b/lib/ace/mode/php_highlight_rules.js
index a3c1e2dc..a7b4e4c2 100644
--- a/lib/ace/mode/php_highlight_rules.js
+++ b/lib/ace/mode/php_highlight_rules.js
@@ -45,8 +45,8 @@ var TextHighlightRules = require("ace/mode/text_highlight_rules").TextHighlightR
 
 var PhpHighlightRules = function() {
   
-	var builtinFunctions = lang.arrayToMap(
-	    ('abs|acos|acosh|addcslashes|addslashes|aggregate|aggregate_info|aggregate_methods|' +
+    var builtinFunctions = lang.arrayToMap(
+        ('abs|acos|acosh|addcslashes|addslashes|aggregate|aggregate_info|aggregate_methods|' +
         'aggregate_methods_by_list|aggregate_methods_by_regexp|aggregate_properties|aggregate_properties_by_list|' +
         'aggregate_properties_by_regexp|aggregation_info|apache_child_terminate|apache_get_modules|' +
         'apache_get_version|apache_getenv|apache_lookup_uri|apache_note|apache_request_headers|' +
@@ -433,8 +433,8 @@ var PhpHighlightRules = function() {
         'yp_err_string|yp_errno|yp_first|yp_get_default_domain|yp_master|yp_match|yp_next|yp_order|zend_logo_guid|zend_version|zip_close|' +
         'zip_entry_close|zip_entry_compressedsize|zip_entry_compressionmethod|zip_entry_filesize|zip_entry_name|zip_entry_open|zip_entry_read|' +
         'zip_open|zip_read|zlib_get_coding_type').split('|')
-	);
-	
+    );
+
     var keywords = lang.arrayToMap(
         ('abstract|and|array|as|break|case|catch|cfunction|class|clone|const|continue|declare|default|die|do|' +
         'else|elseif|enddeclare|endfor|endforeach|endif|endswitch|endwhile|extends|final|for|foreach|function|' +
@@ -602,4 +602,4 @@ var PhpHighlightRules = function() {
 oop.inherits(PhpHighlightRules, TextHighlightRules);
 
 exports.PhpHighlightRules = PhpHighlightRules;
-});
+});
\ No newline at end of file