diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index 265690cd680..588375febc5 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -1148,7 +1148,12 @@ var __param = (this && this.__param) || function (paramIndex, decorator) {
                 function emitJsxAttribute(node: JsxAttribute) {
                     emitAttributeName(node.name);
                     write(': ');
-                    emit(node.initializer);
+                    if (node.initializer) {
+                        emit(node.initializer);
+                    }
+                    else {
+                        write('true');
+                    }
                 }
 
                 function emitJsxElement(openingNode: JsxOpeningElement|JsxSelfClosingElement, children?: JsxChild[]) {
diff --git a/tests/baselines/reference/tsxReactEmit1.js b/tests/baselines/reference/tsxReactEmit1.js
index c8be861e8f1..b6c5fd96183 100644
--- a/tests/baselines/reference/tsxReactEmit1.js
+++ b/tests/baselines/reference/tsxReactEmit1.js
@@ -13,13 +13,13 @@ var selfClosed3 = <div x='1' />;
 var selfClosed4 = <div x="1" y='0' />;
 var selfClosed5 = <div x={0} y='0' />;
 var selfClosed6 = <div x={"1"} y='0' />;
-var selfClosed7 = <div x={p} y='p' />;
+var selfClosed7 = <div x={p} y='p' b />;
 
 var openClosed1 = <div></div>;
 var openClosed2 = <div n='m'>foo</div>;
 var openClosed3 = <div n='m'>{p}</div>;
 var openClosed4 = <div n='m'>{p < p}</div>;
-var openClosed5 = <div n='m'>{p > p}</div>;
+var openClosed5 = <div n='m' b>{p > p}</div>;
 
 class SomeClass {
 	f() {
@@ -48,12 +48,12 @@ var selfClosed3 = React.createElement("div", {x: '1'});
 var selfClosed4 = React.createElement("div", {x: "1", y: '0'});
 var selfClosed5 = React.createElement("div", {x: 0, y: '0'});
 var selfClosed6 = React.createElement("div", {x: "1", y: '0'});
-var selfClosed7 = React.createElement("div", {x: p, y: 'p'});
+var selfClosed7 = React.createElement("div", {x: p, y: 'p', b: true});
 var openClosed1 = React.createElement("div", null);
 var openClosed2 = React.createElement("div", {n: 'm'}, "foo");
 var openClosed3 = React.createElement("div", {n: 'm'}, p);
 var openClosed4 = React.createElement("div", {n: 'm'}, p < p);
-var openClosed5 = React.createElement("div", {n: 'm'}, p > p);
+var openClosed5 = React.createElement("div", {n: 'm', b: true}, p > p);
 var SomeClass = (function () {
     function SomeClass() {
     }
diff --git a/tests/baselines/reference/tsxReactEmit1.symbols b/tests/baselines/reference/tsxReactEmit1.symbols
index f35a7872915..60fa5e70b0a 100644
--- a/tests/baselines/reference/tsxReactEmit1.symbols
+++ b/tests/baselines/reference/tsxReactEmit1.symbols
@@ -48,11 +48,12 @@ var selfClosed6 = <div x={"1"} y='0' />;
 >x : Symbol(unknown)
 >y : Symbol(unknown)
 
-var selfClosed7 = <div x={p} y='p' />;
+var selfClosed7 = <div x={p} y='p' b />;
 >selfClosed7 : Symbol(selfClosed7, Decl(tsxReactEmit1.tsx, 14, 3))
 >div : Symbol(JSX.IntrinsicElements, Decl(tsxReactEmit1.tsx, 1, 22))
 >x : Symbol(unknown)
 >y : Symbol(unknown)
+>b : Symbol(unknown)
 
 var openClosed1 = <div></div>;
 >openClosed1 : Symbol(openClosed1, Decl(tsxReactEmit1.tsx, 16, 3))
@@ -75,15 +76,16 @@ var openClosed4 = <div n='m'>{p < p}</div>;
 >p : Symbol(p, Decl(tsxReactEmit1.tsx, 7, 3))
 >p : Symbol(p, Decl(tsxReactEmit1.tsx, 7, 3))
 
-var openClosed5 = <div n='m'>{p > p}</div>;
+var openClosed5 = <div n='m' b>{p > p}</div>;
 >openClosed5 : Symbol(openClosed5, Decl(tsxReactEmit1.tsx, 20, 3))
 >div : Symbol(JSX.IntrinsicElements, Decl(tsxReactEmit1.tsx, 1, 22))
 >n : Symbol(unknown)
+>b : Symbol(unknown)
 >p : Symbol(p, Decl(tsxReactEmit1.tsx, 7, 3))
 >p : Symbol(p, Decl(tsxReactEmit1.tsx, 7, 3))
 
 class SomeClass {
->SomeClass : Symbol(SomeClass, Decl(tsxReactEmit1.tsx, 20, 43))
+>SomeClass : Symbol(SomeClass, Decl(tsxReactEmit1.tsx, 20, 45))
 
 	f() {
 >f : Symbol(f, Decl(tsxReactEmit1.tsx, 22, 17))
@@ -91,7 +93,7 @@ class SomeClass {
 		var rewrites1 = <div>{() => this}</div>;
 >rewrites1 : Symbol(rewrites1, Decl(tsxReactEmit1.tsx, 24, 5))
 >div : Symbol(JSX.IntrinsicElements, Decl(tsxReactEmit1.tsx, 1, 22))
->this : Symbol(SomeClass, Decl(tsxReactEmit1.tsx, 20, 43))
+>this : Symbol(SomeClass, Decl(tsxReactEmit1.tsx, 20, 45))
 
 		var rewrites2 = <div>{[p, ...p, p]}</div>;
 >rewrites2 : Symbol(rewrites2, Decl(tsxReactEmit1.tsx, 25, 5))
@@ -109,7 +111,7 @@ class SomeClass {
 >rewrites4 : Symbol(rewrites4, Decl(tsxReactEmit1.tsx, 28, 5))
 >div : Symbol(JSX.IntrinsicElements, Decl(tsxReactEmit1.tsx, 1, 22))
 >a : Symbol(unknown)
->this : Symbol(SomeClass, Decl(tsxReactEmit1.tsx, 20, 43))
+>this : Symbol(SomeClass, Decl(tsxReactEmit1.tsx, 20, 45))
 
 		var rewrites5 = <div a={[p, ...p, p]}></div>;
 >rewrites5 : Symbol(rewrites5, Decl(tsxReactEmit1.tsx, 29, 5))
diff --git a/tests/baselines/reference/tsxReactEmit1.types b/tests/baselines/reference/tsxReactEmit1.types
index d58316b14cf..d23cad4560a 100644
--- a/tests/baselines/reference/tsxReactEmit1.types
+++ b/tests/baselines/reference/tsxReactEmit1.types
@@ -54,13 +54,14 @@ var selfClosed6 = <div x={"1"} y='0' />;
 >x : any
 >y : any
 
-var selfClosed7 = <div x={p} y='p' />;
+var selfClosed7 = <div x={p} y='p' b />;
 >selfClosed7 : JSX.Element
-><div x={p} y='p' /> : JSX.Element
+><div x={p} y='p' b /> : JSX.Element
 >div : any
 >x : any
 >p : any
 >y : any
+>b : any
 
 var openClosed1 = <div></div>;
 >openClosed1 : JSX.Element
@@ -93,11 +94,12 @@ var openClosed4 = <div n='m'>{p < p}</div>;
 >p : any
 >div : any
 
-var openClosed5 = <div n='m'>{p > p}</div>;
+var openClosed5 = <div n='m' b>{p > p}</div>;
 >openClosed5 : JSX.Element
-><div n='m'>{p > p}</div> : JSX.Element
+><div n='m' b>{p > p}</div> : JSX.Element
 >div : any
 >n : any
+>b : any
 >p > p : boolean
 >p : any
 >p : any
diff --git a/tests/cases/conformance/jsx/tsxReactEmit1.tsx b/tests/cases/conformance/jsx/tsxReactEmit1.tsx
index 8ca8ef1ff40..b8f14b0ba22 100644
--- a/tests/cases/conformance/jsx/tsxReactEmit1.tsx
+++ b/tests/cases/conformance/jsx/tsxReactEmit1.tsx
@@ -14,13 +14,13 @@ var selfClosed3 = <div x='1' />;
 var selfClosed4 = <div x="1" y='0' />;
 var selfClosed5 = <div x={0} y='0' />;
 var selfClosed6 = <div x={"1"} y='0' />;
-var selfClosed7 = <div x={p} y='p' />;
+var selfClosed7 = <div x={p} y='p' b />;
 
 var openClosed1 = <div></div>;
 var openClosed2 = <div n='m'>foo</div>;
 var openClosed3 = <div n='m'>{p}</div>;
 var openClosed4 = <div n='m'>{p < p}</div>;
-var openClosed5 = <div n='m'>{p > p}</div>;
+var openClosed5 = <div n='m' b>{p > p}</div>;
 
 class SomeClass {
 	f() {