diff --git a/js/widgets/__tests__/reflection.test.js b/js/widgets/__tests__/reflection.test.js
index 2e375b781f..d9fdefe711 100644
--- a/js/widgets/__tests__/reflection.test.js
+++ b/js/widgets/__tests__/reflection.test.js
@@ -124,7 +124,7 @@ describe("ReflectionMatrix", () => {
             expect(reflection.isOpen).toBe(true);
             expect(reflection.isMaximized).toBe(false);
             expect(mockActivity.isInputON).toBe(true);
-            expect(reflection.PORT).toBe("http://3.105.177.138:8000");
+            expect(reflection.PORT).toBe("http://localhost:8000");
 
             expect(window.widgetWindows.windowFor).toHaveBeenCalledWith(
                 reflection,
diff --git a/js/widgets/reflection.js b/js/widgets/reflection.js
index 5941359161..6ca9b70ca5 100644
--- a/js/widgets/reflection.js
+++ b/js/widgets/reflection.js
@@ -76,7 +76,18 @@ class ReflectionMatrix {
         this.isOpen = true;
         this.isMaximized = false;
         this.activity.isInputON = true;
-        this.PORT = "http://3.105.177.138:8000"; // http://127.0.0.1:8000
+        this.PORT = (() => {
+            if (
+                window.location.hostname === "localhost" ||
+                window.location.hostname === "127.0.0.1"
+            ) {
+                return "http://localhost:8000";
+            } else if (window.location.hostname.includes("musicblocks.sugarlabs.org")) {
+                return `${window.location.protocol}//api.musicblocks.sugarlabs.org`;
+            } else {
+                return `${window.location.protocol}//${window.location.hostname}:8000`;
+            }
+        })();
 
         const widgetWindow = window.widgetWindows.windowFor(this, "reflection", "reflection");
         this.widgetWindow = widgetWindow;