diff --git a/jquery.parse.js b/jquery.parse.js
index ec74712..a2008f5 100644
--- a/jquery.parse.js
+++ b/jquery.parse.js
@@ -1,6 +1,6 @@
 /*
 	Parse jQuery Plugin
-	v0.5.3
+	v0.5.4
 	https://github.com/mholt/jquery.parse
 */
 
@@ -304,7 +304,13 @@
 				return true;
 
 			var expected = _state.parsed.fields.length;
-			var actual = Object.keys(_state.parsed.rows[_state.parsed.rows.length - 1]).length;
+			
+			// Actual field count tabulated manually because IE<9 doesn't support Object.keys
+			var actual = 0;
+			var lastRow = _state.parsed.rows[_state.parsed.rows.length - 1];
+			for (var prop in lastRow)
+				if (lastRow.hasOwnProperty(prop))
+					actual ++;
 
 			if (expected != actual)
 				return addError("Too few fields; expected " + expected + " fields, parsed " + actual);
diff --git a/jquery.parse.min.js b/jquery.parse.min.js
index 9395a04..ab80651 100644
--- a/jquery.parse.min.js
+++ b/jquery.parse.min.js
@@ -1,6 +1,6 @@
 /*
 	Parse jQuery Plugin
-	v0.5.3
+	v0.5.4
 	https://github.com/mholt/jquery.parse
 */
-;(function(e){"use strict";function n(e){e.delimeter=e.delimiter||t.delimiter;e.header=typeof e.header==="undefined"?t.header:e.header;e.dynamicTyping=typeof e.dynamicTyping==="undefined"?t.dynamicTyping:e.dynamicTyping;if(e.delimiter=='"'||e.delimiter=="\n")e.delimiter=t.delimiter;if(e.delimiter.length>1)e.delimiter=e.delimiter[0];return e}function r(e,t){function u(e){return e?{fields:[],rows:[]}:[[]]}function a(){return{i:0,line:1,field:0,fieldVal:"",ch:"",inQuotes:false,parsed:u(t.header)}}function f(){var e=o.i>0&&p(r[o.i-1]);var t=o.i<r.length-1&&p(r[o.i+1]);var n=o.i<r.length-1&&r[o.i+1]=='"';if(o.inQuotes&&n){o.fieldVal+='"';o.i++}else if(e||t){o.inQuotes=!o.inQuotes}else{b("Unexpected quotes")}}function l(){c()}function c(){o.fieldVal+=o.ch}function h(){if(o.ch==i.delimiter){d()}else if(o.ch=="\n"){d();v()}else{c()}}function p(e){return e==i.delimiter||e=="\n"}function d(){if(i.header){if(o.line==1){o.parsed.fields.push(o.fieldVal)}else{var e=o.parsed.rows[o.parsed.rows.length-1];var t=o.parsed.fields[o.field];if(t){if(i.dynamicTyping)o.fieldVal=m(o.fieldVal);e[t]=o.fieldVal}else{if(typeof e.__parsed_extra==="undefined")e.__parsed_extra=[];e.__parsed_extra.push(o.fieldVal);b("Too many fields; expected "+o.parsed.fields.length+" fields, found extra value: '"+o.fieldVal+"'")}}}else{if(i.dynamicTyping)o.fieldVal=m(o.fieldVal);o.parsed[o.parsed.length-1].push(o.fieldVal)}o.fieldVal="";o.field++}function v(){g();if(i.header){y();if(o.line>0)o.parsed.rows.push({})}else o.parsed.push([]);o.line++;o.field=0}function m(e){var t=/^-?\d+(\.\d+)?$/.test(e);return t?parseFloat(e):e}function g(){if(i.header){if(o.line==1){if(o.parsed.fields.length==1&&o.parsed.fields[0].length==0){o.parsed.fields=[];o.line--}}else{var e=o.parsed.rows[o.parsed.rows.length-1];if(!e[o.parsed.fields[0]])o.parsed.rows.splice(o.parsed.rows.length-1,1)}}else{var e=o.parsed[o.parsed.length-1];if(e.length==0||e[0].length==0)o.parsed.splice(o.parsed.length-1,1)}}function y(){if(!i.header)return true;if(o.parsed.rows.length==0)return true;var e=o.parsed.fields.length;var t=Object.keys(o.parsed.rows[o.parsed.rows.length-1]).length;if(e!=t)return b("Too few fields; expected "+e+" fields, parsed "+t);return true}function b(e){s.push({message:e,line:o.line,row:i.header?o.parsed.rows.length-1:o.parsed.length-1,index:o.i});return false}var n=this;var r=e;var i=t;var s=[];var o=a();this.parse=function(e){if(typeof e==="object")n.setConfig(e);else if(typeof e==="string")n.setInput(e);s=[];o=a();for(o.i=0;o.i<r.length;o.i++){o.ch=r[o.i];if(o.ch=='"')f();else if(o.inQuotes)l();else h()}d();g();y();if(o.inQuotes)b("Unescaped or mismatched quotes");return n.getParsed()};this.getDelimiter=function(){return t.delimiter};this.setDelimiter=function(e){var t=",";e=e?e=='"'||e=="\n"?t:e:t;i.delimiter=e[0]};this.setConfig=function(e){if(typeof e.header!=="undefined"&&e.header!=t.header||typeof e.delimiter!=="undefined"&&e.delimiter!=t.delimiter){o.parsed=u(e.header)}i=e};this.getInput=function(){return r};this.setInput=function(e){r=e};this.getParsed=function(){return o.parsed};this.getErrors=function(){return s}}var t={delimiter:",",header:true,dynamicTyping:false};e.parse=function(e,t){t=n(t);var i=new r(e,t);return{results:i.parse(),errors:i.getErrors()}}})(jQuery);
\ No newline at end of file
+;(function(e){"use strict";function n(e){e.delimeter=e.delimiter||t.delimiter;e.header=typeof e.header==="undefined"?t.header:e.header;e.dynamicTyping=typeof e.dynamicTyping==="undefined"?t.dynamicTyping:e.dynamicTyping;if(e.delimiter=='"'||e.delimiter=="\n")e.delimiter=t.delimiter;if(e.delimiter.length>1)e.delimiter=e.delimiter[0];return e}function r(e,t){function u(e){return e?{fields:[],rows:[]}:[[]]}function a(){return{i:0,line:1,field:0,fieldVal:"",ch:"",inQuotes:false,parsed:u(t.header)}}function f(){var e=o.i>0&&p(r[o.i-1]);var t=o.i<r.length-1&&p(r[o.i+1]);var n=o.i<r.length-1&&r[o.i+1]=='"';if(o.inQuotes&&n){o.fieldVal+='"';o.i++}else if(e||t){o.inQuotes=!o.inQuotes}else{b("Unexpected quotes")}}function l(){c()}function c(){o.fieldVal+=o.ch}function h(){if(o.ch==i.delimiter){d()}else if(o.ch=="\n"){d();v()}else{c()}}function p(e){return e==i.delimiter||e=="\n"}function d(){if(i.header){if(o.line==1){o.parsed.fields.push(o.fieldVal)}else{var e=o.parsed.rows[o.parsed.rows.length-1];var t=o.parsed.fields[o.field];if(t){if(i.dynamicTyping)o.fieldVal=m(o.fieldVal);e[t]=o.fieldVal}else{if(typeof e.__parsed_extra==="undefined")e.__parsed_extra=[];e.__parsed_extra.push(o.fieldVal);b("Too many fields; expected "+o.parsed.fields.length+" fields, found extra value: '"+o.fieldVal+"'")}}}else{if(i.dynamicTyping)o.fieldVal=m(o.fieldVal);o.parsed[o.parsed.length-1].push(o.fieldVal)}o.fieldVal="";o.field++}function v(){g();if(i.header){y();if(o.line>0)o.parsed.rows.push({})}else o.parsed.push([]);o.line++;o.field=0}function m(e){var t=/^-?\d+(\.\d+)?$/.test(e);return t?parseFloat(e):e}function g(){if(i.header){if(o.line==1){if(o.parsed.fields.length==1&&o.parsed.fields[0].length==0){o.parsed.fields=[];o.line--}}else{var e=o.parsed.rows[o.parsed.rows.length-1];if(!e[o.parsed.fields[0]])o.parsed.rows.splice(o.parsed.rows.length-1,1)}}else{var e=o.parsed[o.parsed.length-1];if(e.length==0||e[0].length==0)o.parsed.splice(o.parsed.length-1,1)}}function y(){if(!i.header)return true;if(o.parsed.rows.length==0)return true;var e=o.parsed.fields.length;var t=0;var n=o.parsed.rows[o.parsed.rows.length-1];for(var r in n)if(n.hasOwnProperty(r))t++;if(e!=t)return b("Too few fields; expected "+e+" fields, parsed "+t);return true}function b(e){s.push({message:e,line:o.line,row:i.header?o.parsed.rows.length-1:o.parsed.length-1,index:o.i});return false}var n=this;var r=e;var i=t;var s=[];var o=a();this.parse=function(e){if(typeof e==="object")n.setConfig(e);else if(typeof e==="string")n.setInput(e);s=[];o=a();for(o.i=0;o.i<r.length;o.i++){o.ch=r[o.i];if(o.ch=='"')f();else if(o.inQuotes)l();else h()}d();g();y();if(o.inQuotes)b("Unescaped or mismatched quotes");return n.getParsed()};this.getDelimiter=function(){return t.delimiter};this.setDelimiter=function(e){var t=",";e=e?e=='"'||e=="\n"?t:e:t;i.delimiter=e[0]};this.setConfig=function(e){if(typeof e.header!=="undefined"&&e.header!=t.header||typeof e.delimiter!=="undefined"&&e.delimiter!=t.delimiter){o.parsed=u(e.header)}i=e};this.getInput=function(){return r};this.setInput=function(e){r=e};this.getParsed=function(){return o.parsed};this.getErrors=function(){return s}}var t={delimiter:",",header:true,dynamicTyping:false};e.parse=function(e,t){t=n(t);var i=new r(e,t);return{results:i.parse(),errors:i.getErrors()}}})(jQuery);
diff --git a/parse.jquery.json b/parse.jquery.json
index 1d78ffd..fb177c3 100644
--- a/parse.jquery.json
+++ b/parse.jquery.json
@@ -1,6 +1,6 @@
 {
 	"name": "parse",
-	"version": "0.5.3",
+	"version": "0.5.4",
 	"title": "Parse jQuery Plugin",
 	"description": "Transforms delimited text (like CSV or tab-delimited) into a usable data structure; efficient and robust CSV parser",
 	"keywords": [