diff --git a/packages/compiler-cli/ngcc/src/host/esm2015_host.ts b/packages/compiler-cli/ngcc/src/host/esm2015_host.ts
index 150f9b1716..a2a6f0b9ae 100644
--- a/packages/compiler-cli/ngcc/src/host/esm2015_host.ts
+++ b/packages/compiler-cli/ngcc/src/host/esm2015_host.ts
@@ -638,7 +638,7 @@ export class Esm2015ReflectionHost extends TypeScriptReflectionHost implements N
    */
   protected getStaticProperty(symbol: NgccClassSymbol, propertyName: ts.__String): ts.Symbol
       |undefined {
-    return symbol.implementation.exports && symbol.implementation.exports.get(propertyName);
+    return symbol.declaration.exports && symbol.declaration.exports.get(propertyName);
   }
 
   /**
diff --git a/packages/compiler-cli/ngcc/test/host/esm2015_host_spec.ts b/packages/compiler-cli/ngcc/test/host/esm2015_host_spec.ts
index 5db8a3fa05..b43c32d839 100644
--- a/packages/compiler-cli/ngcc/test/host/esm2015_host_spec.ts
+++ b/packages/compiler-cli/ngcc/test/host/esm2015_host_spec.ts
@@ -132,9 +132,13 @@ runInEachFileSystem(() => {
       CLASS_EXPRESSION_FILE = {
         name: _('/class_expression.js'),
         contents: `
+    import {Directive} from '@angular/core';
     var AliasedClass_1;
     let EmptyClass = class EmptyClass {};
     let AliasedClass = AliasedClass_1 = class AliasedClass {}
+    AliasedClass.decorators = [
+      { type: Directive, args: [{ selector: '[someDirective]' },] }
+    ];
     let usageOfAliasedClass = AliasedClass_1;
   `,
       };
@@ -708,6 +712,25 @@ runInEachFileSystem(() => {
         ]);
       });
 
+      it('should find the decorators on an aliased class', () => {
+        loadTestFiles([CLASS_EXPRESSION_FILE]);
+        const {program} = makeTestBundleProgram(CLASS_EXPRESSION_FILE.name);
+        const host = new Esm2015ReflectionHost(new MockLogger(), false, program.getTypeChecker());
+        const classNode = getDeclaration(
+            program, CLASS_EXPRESSION_FILE.name, 'AliasedClass', isNamedVariableDeclaration);
+        const decorators = host.getDecoratorsOfDeclaration(classNode) !;
+
+        expect(decorators).toBeDefined();
+        expect(decorators.length).toEqual(1);
+
+        const decorator = decorators[0];
+        expect(decorator.name).toEqual('Directive');
+        expect(decorator.import).toEqual({name: 'Directive', from: '@angular/core'});
+        expect(decorator.args !.map(arg => arg.getText())).toEqual([
+          '{ selector: \'[someDirective]\' }',
+        ]);
+      });
+
       it('should return null if the symbol is not a class', () => {
         loadTestFiles([FOO_FUNCTION_FILE]);
         const {program} = makeTestBundleProgram(FOO_FUNCTION_FILE.name);