diff --git a/docs/manual/style/scripts/prettify.js b/docs/manual/style/scripts/prettify.js
index 6c1287795b..b230fa8877 100644
--- a/docs/manual/style/scripts/prettify.js
+++ b/docs/manual/style/scripts/prettify.js
@@ -111,7 +111,7 @@ var prettyPrint;
   var JSCRIPT_KEYWORDS = [COMMON_KEYWORDS,
       "debugger,eval,export,function,get,null,set,undefined,var,with," +
       "Infinity,NaN"];
-  var PERL_KEYWORDS = "caller,delete,die,do,dump,elsif,eval,exit,foreach,for," +
+  var PERL_KEYWORDS = "caller,delete,die,do,dump,else,elsif,eval,exit,foreach,for," +
       "goto,if,import,last,local,my,next,no,our,print,package,redo,require," +
       "sub,undef,unless,until,use,wantarray,while,BEGIN,END";
   var PYTHON_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "and,as,assert,class,def,del," +
@@ -1140,7 +1140,7 @@ var REGEXP_PRECEDER_PATTERN = '(?:^^\\.?|[+-]|[!=]=?=?|\\#|%=?|&&?=?|\\(|\\*=?|[
       var X = 0;
       while (spanIndex < nSpans) {
         X = X + 1;
-        if (X > 1000) { break; }
+        if (X > 2500) { break; }
         var spanStart = spans[spanIndex];
         var spanEnd = spans[spanIndex + 2] || sourceLength;