diff --git a/Libraries/Blob/URL.js b/Libraries/Blob/URL.js
index 692980c69ca1b8..9869dcbeaded11 100644
--- a/Libraries/Blob/URL.js
+++ b/Libraries/Blob/URL.js
@@ -130,7 +130,12 @@ export class URL {
 
   constructor(url: string, base: string) {
     let baseUrl = null;
-    if (base) {
+    if (!base || validateBaseUrl(url)) {
+      this._url = url;
+      if (!this._url.endsWith('/')) {
+        this._url += '/';
+      }
+    } else {
       if (typeof base === 'string') {
         baseUrl = base;
         if (!validateBaseUrl(baseUrl)) {
@@ -146,11 +151,6 @@ export class URL {
         url = '';
       }
       this._url = `${baseUrl}${url}`;
-    } else {
-      this._url = url;
-      if (!this._url.endsWith('/')) {
-        this._url += '/';
-      }
     }
   }
 
diff --git a/Libraries/Blob/__tests__/URL-test.js b/Libraries/Blob/__tests__/URL-test.js
index 8ca71feb025315..281649ce7821d7 100644
--- a/Libraries/Blob/__tests__/URL-test.js
+++ b/Libraries/Blob/__tests__/URL-test.js
@@ -31,5 +31,7 @@ describe('URL', function() {
     // expect(g.href).toBe('https://developer.mozilla.org/en-US/docs');
     const h = new URL('/en-US/docs', a);
     expect(h.href).toBe('https://developer.mozilla.org/en-US/docs');
+    const i = new URL('http://github.com', 'http://google.com');
+    expect(i.href).toBe('http://github.com/');
   });
 });