diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e0fba4..0d5154a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ changes may not be included if they are not expected to break existing code.
 
 ## Unreleased
 
+* `sheet_to_json` now passes `null` values when `raw` is set to `true`
+* `sheet_to_json` treats `null` stub cells as values in conjunction with `raw`
+
+## 0.9.5 (2017-03-22) 
+
 * `cellDates` affects parsing in non-XLSX formats
 
 ## 0.9.3 (2017-03-15)
diff --git a/README.md b/README.md
index f229ec5..1a00cac 100644
--- a/README.md
+++ b/README.md
@@ -856,6 +856,7 @@ generate different types of JS objects.  The function takes an options argument:
 | range       | from WS  | Override Range (see table below)                    |
 | header      |          | Control output format (see table below)             |
 | dateNF      |  fmt 14  | Use specified date format in string output          |
+| defval      |          | Use specified value in place of null or undefined   |
 
 - `raw` only affects cells which have a format code (`.z`) field or a formatted
   text (`.w`) field.
@@ -864,6 +865,9 @@ generate different types of JS objects.  The function takes an options argument:
 - When `header` is not specified, the conversion will automatically disambiguate
   header entries by affixing `_` and a count starting at `1`.  For example, if
   three columns have header `foo` the output fields are `foo`, `foo_1`, `foo_2`
+- `null` values are returned when `raw` is true but are skipped when false.
+- If `defval` is not specified, null and undefined values are skipped normally.
+  If specified, all null and undefined points will be filled with `defval`
 
 `range` is expected to be one of:
 
diff --git a/bits/90_utils.js b/bits/90_utils.js
index 60ce446..91a27db 100644
--- a/bits/90_utils.js
+++ b/bits/90_utils.js
@@ -77,6 +77,7 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 	var val, row, range, header = 0, offset = 1, r, hdr/*:Array<any>*/ = [], isempty, R, C, v, vv;
 	var o = opts != null ? opts : {};
 	var raw = o.raw;
+	var defval = o.defval;
 	if(sheet == null || sheet["!ref"] == null) return [];
 	range = o.range != null ? o.range : sheet["!ref"];
 	if(o.header === 1) header = 1;
@@ -119,16 +120,26 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 		}
 		for (C = r.s.c; C <= r.e.c; ++C) {
 			val = sheet[cols[C] + rr];
-			if(val === undefined || val.t === undefined) continue;
+			if(val === undefined || val.t === undefined) {
+				if(defval === undefined) continue;
+				if(hdr[C] != null) { row[hdr[C]] = defval; isempty = false; }
+				continue;
+			}
 			v = val.v;
 			switch(val.t){
-				case 'z': continue;
+				case 'z': if(v == null) break; continue;
 				case 'e': continue;
 				case 's': case 'd': case 'b': case 'n': break;
 				default: throw new Error('unrecognized type ' + val.t);
 			}
-			if(v !== undefined) {
-				row[hdr[C]] = raw ? v : format_cell(val,v);
+			if(hdr[C] != null) {
+				if(v == null) {
+					if(defval !== undefined) row[hdr[C]] = defval;
+					else if(raw && v === null) row[hdr[C]] = null;
+					else continue;
+				} else {
+					row[hdr[C]] = raw ? v : format_cell(val,v);
+				}
 				isempty = false;
 			}
 		}
diff --git a/docbits/82_util.md b/docbits/82_util.md
index 474046d..f354114 100644
--- a/docbits/82_util.md
+++ b/docbits/82_util.md
@@ -65,6 +65,7 @@ generate different types of JS objects.  The function takes an options argument:
 | range       | from WS  | Override Range (see table below)                    |
 | header      |          | Control output format (see table below)             |
 | dateNF      |  fmt 14  | Use specified date format in string output          |
+| defval      |          | Use specified value in place of null or undefined   |
 
 - `raw` only affects cells which have a format code (`.z`) field or a formatted
   text (`.w`) field.
@@ -73,6 +74,9 @@ generate different types of JS objects.  The function takes an options argument:
 - When `header` is not specified, the conversion will automatically disambiguate
   header entries by affixing `_` and a count starting at `1`.  For example, if
   three columns have header `foo` the output fields are `foo`, `foo_1`, `foo_2`
+- `null` values are returned when `raw` is true but are skipped when false.
+- If `defval` is not specified, null and undefined values are skipped normally.
+  If specified, all null and undefined points will be filled with `defval`
 
 `range` is expected to be one of:
 
diff --git a/test.js b/test.js
index c23ef72..4ffbbb1 100644
--- a/test.js
+++ b/test.js
@@ -1051,9 +1051,10 @@ function sheet_from_array_of_arrays(data, opts) {
 			if(range.e.r < R) range.e.r = R;
 			if(range.e.c < C) range.e.c = C;
 			var cell = {v: data[R][C] };
-			if(cell.v == null) continue;
+			if(cell.v === undefined) continue;
 			var cell_ref = X.utils.encode_cell({c:C,r:R});
-			if(typeof cell.v === 'number') cell.t = 'n';
+			if(cell.v === null) cell.t = 'z';
+			else if(typeof cell.v === 'number') cell.t = 'n';
 			else if(typeof cell.v === 'boolean') cell.t = 'b';
 			else if(cell.v instanceof Date) {
 				cell.z = X.SSF._table[14];
@@ -1081,8 +1082,8 @@ describe('json output', function() {
 		data = [
 			[1,2,3],
 			[true, false, null, "sheetjs"],
-			["foo","bar",new Date("2014-02-19T14:30Z"), "0.3"],
-			["baz", null, "qux"]
+			["foo", "bar", new Date("2014-02-19T14:30Z"), "0.3"],
+			["baz", undefined, "qux"]
 		];
 		ws = sheet_from_array_of_arrays(data);
 	});
@@ -1139,6 +1140,23 @@ describe('json output', function() {
 			assert.throws(function() { seeker(json, [0,1,2], "baz"); });
 		});
 	});
+	it('should use defval if requested', function() {
+		var json = X.utils.sheet_to_json(ws, {defval: 'jimjin'});
+		console.log(json);
+		console.log(ws);
+		assert.equal(json.length, data.length - 1);
+		assert.equal(json[0][1], "TRUE");
+		assert.equal(json[1][2], "bar");
+		assert.equal(json[2][3], "qux");
+		assert.equal(json[2][2], "jimjin");
+		assert.equal(json[0][3], "jimjin");
+		assert.doesNotThrow(function() { seeker(json, [1,2,3], "sheetjs"); });
+		assert.throws(function() { seeker(json, [1,2,3], "baz"); });
+		var json = X.utils.sheet_to_json(ws, {raw:true});
+		console.log(json);
+		var json = X.utils.sheet_to_json(ws, {raw:true, defval: 'jimjin'});
+		console.log(json);
+	});
 	it('should disambiguate headers', function() {
 		var _data = [["S","h","e","e","t","J","S"],[1,2,3,4,5,6,7],[2,3,4,5,6,7,8]];
 		var _ws = sheet_from_array_of_arrays(_data);
@@ -1158,6 +1176,7 @@ describe('json output', function() {
 		var json = X.utils.sheet_to_json(_ws, {header:1, raw:true});
 		assert.equal(json.length, data.length);
 		assert.equal(json[1][0], true);
+		assert.equal(json[1][2], null);
 		assert.equal(json[2][1], "bar");
 		assert.equal(json[2][2].getTime(), new Date("2014-02-19T14:30Z").getTime());
 		assert.equal(json[3][2], "qux");
diff --git a/xlsx.flow.js b/xlsx.flow.js
index d57c851..3b2dcc8 100644
--- a/xlsx.flow.js
+++ b/xlsx.flow.js
@@ -14074,6 +14074,7 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 	var val, row, range, header = 0, offset = 1, r, hdr/*:Array<any>*/ = [], isempty, R, C, v, vv;
 	var o = opts != null ? opts : {};
 	var raw = o.raw;
+	var defval = o.defval;
 	if(sheet == null || sheet["!ref"] == null) return [];
 	range = o.range != null ? o.range : sheet["!ref"];
 	if(o.header === 1) header = 1;
@@ -14116,16 +14117,26 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
 		}
 		for (C = r.s.c; C <= r.e.c; ++C) {
 			val = sheet[cols[C] + rr];
-			if(val === undefined || val.t === undefined) continue;
+			if(val === undefined || val.t === undefined) {
+				if(defval === undefined) continue;
+				if(hdr[C] != null) { row[hdr[C]] = defval; isempty = false; }
+				continue;
+			}
 			v = val.v;
 			switch(val.t){
-				case 'z': continue;
+				case 'z': if(v == null) break; continue;
 				case 'e': continue;
 				case 's': case 'd': case 'b': case 'n': break;
 				default: throw new Error('unrecognized type ' + val.t);
 			}
-			if(v !== undefined) {
-				row[hdr[C]] = raw ? v : format_cell(val,v);
+			if(hdr[C] != null) {
+				if(v == null) {
+					if(defval !== undefined) row[hdr[C]] = defval;
+					else if(raw && v === null) row[hdr[C]] = null;
+					else continue;
+				} else {
+					row[hdr[C]] = raw ? v : format_cell(val,v);
+				}
 				isempty = false;
 			}
 		}
diff --git a/xlsx.js b/xlsx.js
index 5080233..0b2d30b 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -14007,6 +14007,7 @@ function sheet_to_json(sheet, opts){
 	var val, row, range, header = 0, offset = 1, r, hdr = [], isempty, R, C, v, vv;
 	var o = opts != null ? opts : {};
 	var raw = o.raw;
+	var defval = o.defval;
 	if(sheet == null || sheet["!ref"] == null) return [];
 	range = o.range != null ? o.range : sheet["!ref"];
 	if(o.header === 1) header = 1;
@@ -14049,16 +14050,26 @@ function sheet_to_json(sheet, opts){
 		}
 		for (C = r.s.c; C <= r.e.c; ++C) {
 			val = sheet[cols[C] + rr];
-			if(val === undefined || val.t === undefined) continue;
+			if(val === undefined || val.t === undefined) {
+				if(defval === undefined) continue;
+				if(hdr[C] != null) { row[hdr[C]] = defval; isempty = false; }
+				continue;
+			}
 			v = val.v;
 			switch(val.t){
-				case 'z': continue;
+				case 'z': if(v == null) break; continue;
 				case 'e': continue;
 				case 's': case 'd': case 'b': case 'n': break;
 				default: throw new Error('unrecognized type ' + val.t);
 			}
-			if(v !== undefined) {
-				row[hdr[C]] = raw ? v : format_cell(val,v);
+			if(hdr[C] != null) {
+				if(v == null) {
+					if(defval !== undefined) row[hdr[C]] = defval;
+					else if(raw && v === null) row[hdr[C]] = null;
+					else continue;
+				} else {
+					row[hdr[C]] = raw ? v : format_cell(val,v);
+				}
 				isempty = false;
 			}
 		}