diff --git a/packages/web/src/EnterLicensePage.svelte b/packages/web/src/EnterLicensePage.svelte
index 03e1e0f86..17a7759de 100644
--- a/packages/web/src/EnterLicensePage.svelte
+++ b/packages/web/src/EnterLicensePage.svelte
@@ -95,7 +95,9 @@
           <FormStyledButton
             value="Purchase DbGate Premium"
             on:click={async e => {
-              openWebLink('https://auth.dbgate.eu/create-checkout-session-simple');
+              openWebLink(
+                `https://auth.dbgate.eu/create-checkout-session-simple?source=trial-${isExpired ? 'expired' : trialDaysLeft}`
+              );
             }}
           />
         </div>