diff --git a/lib/compiler.js b/lib/compiler.js
index 1972958..c460f51 100644
--- a/lib/compiler.js
+++ b/lib/compiler.js
@@ -749,7 +749,7 @@ PEG.Grammar.Class.prototype.compile = function(resultVar) {
 
   return PEG.Compiler.formatCode(
     "if (this._input.substr(this._pos).match(${regexp}) !== null) {",
-    "  var ${resultVar} = this._input[this._pos];",
+    "  var ${resultVar} = this._input.charAt(this._pos);",
     "  this._pos++;",
     "} else {",
     "  var ${resultVar} = null;",
@@ -768,7 +768,7 @@ PEG.Grammar.Class.prototype.compile = function(resultVar) {
 PEG.Grammar.Any.prototype.compile = function(resultVar) {
   return PEG.Compiler.formatCode(
     "if (this._input.length > this._pos) {",
-    "  var ${resultVar} = this._input[this._pos];",
+    "  var ${resultVar} = this._input.charAt(this._pos);",
     "  this._pos++;",
     "} else {",
     "  var ${resultVar} = null;",
diff --git a/lib/metagrammar.js b/lib/metagrammar.js
index daab3e0..642770d 100644
--- a/lib/metagrammar.js
+++ b/lib/metagrammar.js
@@ -836,7 +836,7 @@ PEG.grammarParser = (function(){
       
       
       if (this._input.substr(this._pos).match(/^[^{}]/) !== null) {
-        var result97 = this._input[this._pos];
+        var result97 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result97 = null;
@@ -1698,7 +1698,7 @@ PEG.grammarParser = (function(){
       }
       if (result172 !== null) {
         if (this._input.length > this._pos) {
-          var result173 = this._input[this._pos];
+          var result173 = this._input.charAt(this._pos);
           this._pos++;
         } else {
           var result173 = null;
@@ -1902,7 +1902,7 @@ PEG.grammarParser = (function(){
       }
       if (result193 !== null) {
         if (this._input.length > this._pos) {
-          var result194 = this._input[this._pos];
+          var result194 = this._input.charAt(this._pos);
           this._pos++;
         } else {
           var result194 = null;
@@ -2262,7 +2262,7 @@ PEG.grammarParser = (function(){
       }
       if (result227 !== null) {
         if (this._input.length > this._pos) {
-          var result228 = this._input[this._pos];
+          var result228 = this._input.charAt(this._pos);
           this._pos++;
         } else {
           var result228 = null;
@@ -2364,7 +2364,7 @@ PEG.grammarParser = (function(){
         }
         if (result236 !== null) {
           if (this._input.length > this._pos) {
-            var result237 = this._input[this._pos];
+            var result237 = this._input.charAt(this._pos);
             this._pos++;
           } else {
             var result237 = null;
@@ -2641,7 +2641,7 @@ PEG.grammarParser = (function(){
       
       
       if (this._input.substr(this._pos).match(/^[0-9]/) !== null) {
-        var result264 = this._input[this._pos];
+        var result264 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result264 = null;
@@ -2671,7 +2671,7 @@ PEG.grammarParser = (function(){
       
       
       if (this._input.substr(this._pos).match(/^[0-9a-fA-F]/) !== null) {
-        var result265 = this._input[this._pos];
+        var result265 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result265 = null;
@@ -2733,7 +2733,7 @@ PEG.grammarParser = (function(){
       
       
       if (this._input.substr(this._pos).match(/^[a-z]/) !== null) {
-        var result269 = this._input[this._pos];
+        var result269 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result269 = null;
@@ -2763,7 +2763,7 @@ PEG.grammarParser = (function(){
       
       
       if (this._input.substr(this._pos).match(/^[A-Z]/) !== null) {
-        var result270 = this._input[this._pos];
+        var result270 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result270 = null;
@@ -2910,7 +2910,7 @@ PEG.grammarParser = (function(){
         }
         if (result283 !== null) {
           if (this._input.length > this._pos) {
-            var result284 = this._input[this._pos];
+            var result284 = this._input.charAt(this._pos);
             this._pos++;
           } else {
             var result284 = null;
@@ -2944,7 +2944,7 @@ PEG.grammarParser = (function(){
           }
           if (result283 !== null) {
             if (this._input.length > this._pos) {
-              var result284 = this._input[this._pos];
+              var result284 = this._input.charAt(this._pos);
               this._pos++;
             } else {
               var result284 = null;
@@ -3028,7 +3028,7 @@ PEG.grammarParser = (function(){
         }
         if (result291 !== null) {
           if (this._input.length > this._pos) {
-            var result292 = this._input[this._pos];
+            var result292 = this._input.charAt(this._pos);
             this._pos++;
           } else {
             var result292 = null;
@@ -3070,7 +3070,7 @@ PEG.grammarParser = (function(){
           }
           if (result291 !== null) {
             if (this._input.length > this._pos) {
-              var result292 = this._input[this._pos];
+              var result292 = this._input.charAt(this._pos);
               this._pos++;
             } else {
               var result292 = null;
@@ -3225,7 +3225,7 @@ PEG.grammarParser = (function(){
       
       
       if (this._input.substr(this._pos).match(/^[\n\r\u2028\u2029]/) !== null) {
-        var result300 = this._input[this._pos];
+        var result300 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result300 = null;
@@ -3256,7 +3256,7 @@ PEG.grammarParser = (function(){
       var savedReportMatchFailures = context.reportMatchFailures;
       context.reportMatchFailures = false;
       if (this._input.substr(this._pos).match(/^[ 	  ᠎ -   　]/) !== null) {
-        var result301 = this._input[this._pos];
+        var result301 = this._input.charAt(this._pos);
         this._pos++;
       } else {
         var result301 = null;