diff --git a/.changeset/brave-boats-greet.md b/.changeset/brave-boats-greet.md
new file mode 100644
index 0000000000..e9d3debc35
--- /dev/null
+++ b/.changeset/brave-boats-greet.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-lighthouse': patch
+---
+
+Strip trailing slash from url when creating a new audit. This change prevents duplicate audits from being displayed in the audit list.
diff --git a/plugins/lighthouse/src/components/CreateAudit/index.tsx b/plugins/lighthouse/src/components/CreateAudit/index.tsx
index 18f2c30a6e..8f514eb54a 100644
--- a/plugins/lighthouse/src/components/CreateAudit/index.tsx
+++ b/plugins/lighthouse/src/components/CreateAudit/index.tsx
@@ -79,7 +79,7 @@ export const CreateAuditContent = () => {
       // TODO use the id from the response to redirect to the audit page for that id when
       // FAILED and RUNNING audits are supported
       await lighthouseApi.triggerAudit({
-        url,
+        url: url.replace(/\/$/, ''),
         options: {
           lighthouseConfig: {
             settings: {