diff --git a/lib/core/src/lib/common/services/cookie.service.ts b/lib/core/src/lib/common/services/cookie.service.ts
index b93253267a..3dfeb2e7e4 100644
--- a/lib/core/src/lib/common/services/cookie.service.ts
+++ b/lib/core/src/lib/common/services/cookie.service.ts
@@ -51,7 +51,7 @@ export class CookieService {
      * @returns The cookie data or null if it is not found
      */
     getItem(key: string): string | null {
-        const regexp = new RegExp('(?:' + key + '|;\s*' + key + ')=(.*?)(?:;|$)', 'g');
+        const regexp = new RegExp('(?:' + key + '|;\\s*' + key + ')=(.*?)(?:;|$)', 'g');
         const result = regexp.exec(document.cookie);
         return (result === null) ? null : result[1];
     }