diff --git a/index.test.ts b/index.test.ts
index c3e5d5a..b6c13fa 100644
--- a/index.test.ts
+++ b/index.test.ts
@@ -38,7 +38,21 @@ describe("processEvent", () => {
       "http://www.google.com"
     );
   });
-  it.todo("should convert the current_url to lowercase");
+
+  it("should convert the current_url to lowercase", async () => {
+    const sourceEvent = buildPageViewEvent(
+      "http://www.GoOGle.com/WhatAreYouThinking"
+    );
+
+    const processedEvent = await processEvent(sourceEvent, getMeta());
+
+    console.log("processedEvent = ", processedEvent);
+
+    expect(processedEvent?.properties?.current_url).toEqual(
+      "http://www.google.com/whatareyouthinking"
+    );
+  });
+
   it.todo("should remove the trailing slash from the current_url");
   it.todo("should preserve trailing id anchors");
   it.todo("shouldn't modify events that don't have a current_url set");
diff --git a/index.ts b/index.ts
index 9dd859e..f2082df 100644
--- a/index.ts
+++ b/index.ts
@@ -1,11 +1,18 @@
 import { PluginEvent, PluginInput, PluginMeta } from "@posthog/plugin-scaffold";
 
+function normalizeUrl(url: string): string {
+  return url.toLowerCase().replace(/\/$/, "");
+}
+
 export function processEvent(
   event: PluginEvent,
   meta: PluginMeta<PluginInput>
 ) {
-  if (event.properties) {
-    event.properties["hello"] = "world";
+  const current_url = event?.properties?.current_url;
+  if (event?.properties && current_url) {
+    const normalized_url = normalizeUrl(current_url);
+    event.properties.current_url = normalized_url;
   }
+
   return event;
 }