diff --git a/modules/change_detection/src/parser/ast.js b/modules/change_detection/src/parser/ast.js
index 38f6ff0546..8014c494d7 100644
--- a/modules/change_detection/src/parser/ast.js
+++ b/modules/change_detection/src/parser/ast.js
@@ -21,6 +21,9 @@ export class ImplicitReceiver extends AST {
 }
 
 export class Conditional extends AST {
+  @FIELD('final condition:AST')
+  @FIELD('final trueExp:AST')
+  @FIELD('final falseExp:AST')
   constructor(condition:AST, trueExp:AST, falseExp:AST){
     this.condition = condition;
     this.trueExp = trueExp;
@@ -37,6 +40,9 @@ export class Conditional extends AST {
 }
 
 export class FieldRead extends AST {
+  @FIELD('final receiver:AST')
+  @FIELD('final name:string')
+  @FIELD('final getter:Function')
   constructor(receiver:AST, name:string, getter:Function) {
     this.receiver = receiver;
     this.name = name;
@@ -53,6 +59,9 @@ export class FieldRead extends AST {
 }
 
 export class Formatter extends AST {
+  @FIELD('final exp:AST')
+  @FIELD('final name:string')
+  @FIELD('final args:List<AST>')
   constructor(exp:AST, name:string, args:List) {
     this.exp = exp;
     this.name = name;
diff --git a/modules/change_detection/src/parser/parser.js b/modules/change_detection/src/parser/parser.js
index d7407cfe2c..5ee8e4eb6c 100644
--- a/modules/change_detection/src/parser/parser.js
+++ b/modules/change_detection/src/parser/parser.js
@@ -36,7 +36,7 @@ export class Parser {
 }
 
 class _ParseAST {
-  @FIELD('final input:String')
+  @FIELD('final input:string')
   @FIELD('final tokens:List<Token>')
   @FIELD('final closureMap:ClosureMap')
   @FIELD('final parseAction:boolean')