diff --git a/modules/@angular/compiler/src/shadow_css.ts b/modules/@angular/compiler/src/shadow_css.ts
index c3db3148f2..80fe96333b 100644
--- a/modules/@angular/compiler/src/shadow_css.ts
+++ b/modules/@angular/compiler/src/shadow_css.ts
@@ -383,6 +383,8 @@ export class ShadowCss {
   // scope via name and [is=name]
   private _applySimpleSelectorScope(selector: string, scopeSelector: string, hostSelector: string):
       string {
+    // In Android browser, the lastIndex is not reset when the regex is used in String.replace()
+    _polyfillHostRe.lastIndex = 0;
     if (_polyfillHostRe.test(selector)) {
       const replaceBy = this.strictStyling ? `[${hostSelector}]` : scopeSelector;
       selector = StringWrapper.replace(selector, _polyfillHostNoCombinator, replaceBy);