diff --git a/core/constants.js b/core/constants.js
index 1b4e11ec8e87d8d1bd1948f990ca9462bd00c25b..c3320fd99cd6efde8ea72aabd403ef8ccbe61c5d 100644
--- a/core/constants.js
+++ b/core/constants.js
@@ -24,8 +24,7 @@ const Address = {
     'EXAMPLE': 'example.org',
     'HTTP': 'http:',
     'HTTPS': 'https:',
-    'WWW_PREFIX': 'www.',
-    'WWW_PREFIX_LENGTH': 4
+    'WWW_PREFIX': 'www.'
 };
 
 const Resource = {
diff --git a/core/request-analyzer.js b/core/request-analyzer.js
index 4517d67ecf198412df4cfdbb79a2a0b72cc58bcb..0745488717ade12e889153c701152751b7082d4b 100644
--- a/core/request-analyzer.js
+++ b/core/request-analyzer.js
@@ -126,17 +126,6 @@ requestAnalyzer._applyWhitelistedDomains = function () {
     });
 };
 
-requestAnalyzer._normalizeDomain = function (domain) {
-
-    domain = domain.toLowerCase().trim();
-
-    if (domain.startsWith(Address.WWW_PREFIX)) {
-        domain = domain.slice(Address.WWW_PREFIX_LENGTH);
-    }
-
-    return domain;
-};
-
 /**
  * Initializations
  */