diff --git a/TestHScript.hx b/TestHScript.hx
index db279557..4fbc881f 100644
--- a/TestHScript.hx
+++ b/TestHScript.hx
@@ -131,6 +131,31 @@ class TestHScript extends TestCase {
 		assertScript("pt2?.pt?.x", 10, vars);
 	}
 
+	function testNullCoalescing():Void {
+		var pt = {x: 10};
+		var vars = {
+			ptnull: null,
+			pt: pt,
+			pt2null: {pt: null},
+			pt2: {pt: pt},
+			valuenull: null,
+			value: 10
+		}
+		assertScript("ptnull?.x ?? 5", 5, vars);
+		assertScript("pt?.x ?? 5", 10, vars);
+		assertScript("pt2null?.pt ?? 5", 5, vars);
+		assertScript("pt2null?.pt?.x ?? 5", 5, vars);
+		assertScript("pt2?.pt ?? 5", pt, vars);
+		assertScript("pt2?.pt?.x ?? 5", 10, vars);
+		#if cpp
+		assertScript('valuenull ??${"="} 5; valuenull', 5, vars);
+		assertScript('value ??${"="} 5; value', 10, vars);
+		#else
+		assertScript("valuenull ??= 5; valuenull", 5, vars);
+		assertScript("value ??= 5; value", 10, vars);
+		#end
+	}
+
 	function testIsOperator():Void {
 		var vars = {
 			String: String,
diff --git a/hscript/Interp.hx b/hscript/Interp.hx
index 46632390..170cc838 100644
--- a/hscript/Interp.hx
+++ b/hscript/Interp.hx
@@ -122,6 +122,7 @@ class Interp {
 		assignOp("*=",function(v1:Float,v2:Float) return v1 * v2);
 		assignOp("/=",function(v1:Float,v2:Float) return v1 / v2);
 		assignOp("%=",function(v1:Float,v2:Float) return v1 % v2);
+		assignOp(#if cpp "??"+"=" #else "??=" #end,function(v1:Dynamic,v2:Dynamic) if ( v1 == null ) return v1 = v2 else return v1);
 		assignOp("&=",function(v1,v2) return v1 & v2);
 		assignOp("|=",function(v1,v2) return v1 | v2);
 		assignOp("^=",function(v1,v2) return v1 ^ v2);
diff --git a/hscript/Parser.hx b/hscript/Parser.hx
index 12c51e7a..ed35ed00 100644
--- a/hscript/Parser.hx
+++ b/hscript/Parser.hx
@@ -33,6 +33,7 @@ enum Token {
 	TBrClose;
 	TDot;
 	TQuestionDot;
+	TQuestionQuestion;
 	TComma;
 	TSemicolon;
 	TBkOpen;
@@ -127,7 +128,7 @@ class Parser {
 			["..."],
 			["&&"],
 			["||"],
-			["=","+=","-=","*=","/=","%=","<<=",">>=",">>>=","|=","&=","^=","=>"],
+			["=","+=","-=","*=","/=","%=",#if cpp "??"+"=" #else "??=" #end,"<<=",">>=",">>>=","|=","&=","^=","=>"],
 			["->"]
 		];
 		#if haxe3
@@ -821,6 +822,18 @@ class Parser {
 				))
 			]),pmin(e1));
 			return parseExprNext(e);
+		case TQuestionQuestion:
+			var e2 = parseExpr();
+			var tmp = "__a_" + (uid++);
+			var e = mk(EBlock([
+				mk(EVar(tmp, null, e1), pmin(e1), pmax(e1)),
+				mk(ETernary(
+					mk(EBinop("==", mk(EIdent(tmp),pmin(e1),pmax(e1)), mk(EIdent("null"),pmin(e1),pmax(e1)))),
+					e2,
+					mk(EIdent(tmp),pmin(e1),pmax(e1))
+				))
+			]),pmin(e1));
+			return parseExprNext(e);
 		case TPOpen:
 			return parseExprNext(mk(ECall(e1,parseExprList(TPClose)),pmin(e1)));
 		case TBkOpen:
@@ -1508,6 +1521,12 @@ class Parser {
 				char = readChar();
 				if( char == ".".code )
 					return TQuestionDot;
+				else if ( char == "?".code ) {
+					char = readChar();
+					if ( char == "=".code )
+						return TOp(#if cpp "??"+"=" #else "??=" #end);
+					return TQuestionQuestion;
+				}
 				this.char = char;
 				return TQuestion;
 			case ":".code: return TDoubleDot;
@@ -1738,6 +1757,7 @@ class Parser {
 		case TBrClose: "}";
 		case TDot: ".";
 		case TQuestionDot: "?.";
+		case TQuestionQuestion: "??";
 		case TComma: ",";
 		case TSemicolon: ";";
 		case TBkOpen: "[";