diff --git a/Libraries/Blob/URL.js b/Libraries/Blob/URL.js
index 9bcc8060e05e27..77b4d7f94d6d7f 100644
--- a/Libraries/Blob/URL.js
+++ b/Libraries/Blob/URL.js
@@ -101,7 +101,13 @@ export class URLSearchParams {
     }
     const last = this._searchParams.length - 1;
     return this._searchParams.reduce((acc, curr, index) => {
-      return acc + curr.join('=') + (index === last ? '' : '&');
+      return (
+        acc +
+        encodeURIComponent(curr[0]) +
+        '=' +
+        encodeURIComponent(curr[1]) +
+        (index === last ? '' : '&')
+      );
     }, '');
   }
 }